Fix WebSocket reconnect: refused upgrades are 1006 not 1008, back off, prompt once

Resolves main.py: the branch's application supersedes the placeholder, and
/api/version + /api/health now live in app/api/meta.py so bin/wait-deploy
keeps working.

.env.example

@@ -0,0 +1,26 @@
+# Data sources
+LIVE_SOURCE=yahoo
+SEED_SOURCE=yahoo
+YAHOO_SYMBOL=ES=F
+YAHOO_POLL_SECONDS=20
+SEED_1H_RANGE=730d
+SEED_1M_RANGE=8d
+
+# Chart and analysis
+TIMEFRAMES=1m,5m,15m,30m,1h,1d
+BASE_TIMEFRAMES=1m,30m,1d
+MAX_BARS_PER_TF=5000
+MA_SETS__1D=sma10,sma20,sma50,sma100,sma200
+MA_SETS__1H=
+DAILY_ANCHOR_ET=18:00
+MANUAL_LINES_PATH=./data/manual_lines.json
+CONFLUENCE_MIN_SCORE=28
+ALERT_COOLDOWN_SECONDS=900
+
+# Notifications and access
+NTFY_TOPIC=
+NTFY_SERVER=https://ntfy.sh
+# Blank = no auth (fine locally). In production this is set in Coolify, not
+# here — see README. Sent as the X-Chart-Token header, or ?token= for /ws.
+CHART_AUTH_TOKEN=
+REPLAY_FILE=

.gitignore

@@ -2,3 +2,6 @@ __pycache__/
 *.pyc
 .venv/
 .env
+.schwab_token.json
+data/manual_lines.json
+artifacts/playwright/

README.md

@@ -3,7 +3,10 @@
 FastAPI backend + Vue 3 (from CDN, no build step) served at
 <https://chart.amow.com>.
 
-Currently a placeholder: the frontend calls `/api/hello` and prints the JSON.
+The app charts Yahoo's `ES=F` feed, builds CME-session-aware timeframes and daily moving
+averages, and alerts on confluence zones. The full spec lives in
+[`docs/IMPLEMENTATION_PLAN.md`](docs/IMPLEMENTATION_PLAN.md) — read it before writing
+code; it records decisions and verified API facts that are expensive to rediscover.
 
 ## Local development
 
@@ -11,12 +14,20 @@ Currently a placeholder: the frontend calls `/api/hello` and prints the JSON.
 docker compose up --build
 ```
 
-Then open <http://localhost:8000>. Override the host port with
+Then open <http://localhost:8010>. Override the host port with, for example,
-`PORT=8010 docker compose up` if 8000 is busy — on the VPS itself it always is,
+`PORT=8020 docker compose up`. The port binds to all host interfaces, so another
-that's the Coolify UI. The source tree is bind-mounted and uvicorn
+machine can connect at `http://HOST_IP:8010`. The source tree is bind-mounted and uvicorn
 runs with `--reload`, so edits to `main.py` or `static/` take effect without a
 rebuild. Rebuild only when `requirements.txt` changes.
 
+The Compose stack also includes Playwright for browser screenshots. It reaches
+the app over the internal Compose network and writes ignored artifacts locally:
+
+```bash
+docker compose exec playwright playwright screenshot \
+  --lang en-US --wait-for-timeout 5000 http://api:8000 /artifacts/chart.png
+```
+
 Without Docker:
 
 ```bash
@@ -25,11 +36,24 @@ pip install -r requirements.txt
 uvicorn main:app --reload
 ```
 
+Copy settings from `.env.example` as needed. To recalibrate the alert threshold against
+Yahoo's current eight-day minute tape:
+
+```bash
+python3 -m scripts.calibrate_alerts
+```
+
+The M4 calibration on 2026-08-09 replayed 8,065 minute bars across seven sessions.
+Threshold `12` generated 210 alerts from lone daily MAs; `24` and the selected `28`
+generated none. The selected threshold deliberately requires at least three clustered
+daily MAs (score `36`) and should be revisited as more varied tapes are recorded.
+
 ## Layout
 
 | Path | Purpose |
 |---|---|
-| `main.py` | FastAPI app — JSON under `/api`, serves the SPA at `/` |
+| `main.py` | FastAPI lifespan and app wiring; JSON under `/api`, SPA at `/` |
+| `app/` | Market sources, aggregation, analysis, alerts, and API |
 | `static/` | `index.html`, `app.js`, `style.css` — Vue 3 loaded from unpkg |
 | `requirements.txt` | Python deps |
 | `Procfile` | Start command; **nixpacks needs this** or the deploy has nothing to run |
@@ -78,3 +102,31 @@ Manual redeploy:
 curl -X POST -H "Authorization: Bearer $(cat ~/.coolify-token)" \
   "http://127.0.0.1:8000/api/v1/deploy?uuid=dgvch0xqv8uvjfor7dl8bwl9&force=true"
 ```
+
+
+## Access token
+
+`CHART_AUTH_TOKEN` guards everything under `/api` plus the `/ws` stream. Leave
+it blank and the app is wide open, which is what you want locally — nothing
+prompts. Set it and every request needs the token, as the `X-Chart-Token`
+header or a `?token=` query parameter (WebSocket handshakes can't carry
+headers, hence the second form).
+
+In production the token lives in **Coolify's environment variables**, not in
+this repo and not in `.env` — that file is gitignored and never exists in the
+built container. Coolify re-injects its env vars into every container it
+builds, so the token survives redeploys and reboots.
+
+The browser asks for it once on the first 401 and keeps it in `localStorage`.
+To clear it: `localStorage.removeItem('chart-token')`.
+
+`/api/health` and `/api/version` deliberately stay open — `bin/wait-deploy`
+polls the latter from whatever machine you pushed from, and neither reveals
+anything about the market data or the configuration.
+
+## Saved trendlines
+
+Manual trendlines are written to `MANUAL_LINES_PATH` (`./data/manual_lines.json`).
+In production `/app/data` is a **Coolify persistent volume** — without it the
+container filesystem is ephemeral and every deploy would silently wipe every
+line you've drawn.

app/__init__.py

@@ -0,0 +1 @@
+"""Application package."""

app/analysis/__init__.py

@@ -0,0 +1 @@
+"""Pure analysis engines."""

app/analysis/alerts.py

@@ -0,0 +1,55 @@
+from dataclasses import dataclass
+
+from app.analysis.confluence import Cluster
+
+
+@dataclass(slots=True)
+class Alert:
+    cluster: Cluster
+    message: str
+
+
+class AlertEngine:
+    def __init__(self, min_score: float, cooldown_seconds: int = 900):
+        self.min_score = min_score
+        self.cooldown_seconds = cooldown_seconds
+        self._fired_at: dict[str, int] = {}
+
+    def evaluate(
+        self,
+        clusters: list[Cluster],
+        current_price: float,
+        atr15: float,
+        now: int,
+        symbol: str,
+    ) -> list[Alert]:
+        tolerance = 0.5 * atr15
+        if tolerance <= 0:
+            return []
+        alerts: list[Alert] = []
+        active_ids = {cluster.id for cluster in clusters}
+        for cluster_id, fired_at in list(self._fired_at.items()):
+            cluster = next((item for item in clusters if item.id == cluster_id), None)
+            separated = cluster is None or abs(cluster.center - current_price) > 2 * tolerance
+            if separated and now - fired_at >= self.cooldown_seconds:
+                del self._fired_at[cluster_id]
+            elif cluster_id not in active_ids and now - fired_at >= self.cooldown_seconds:
+                del self._fired_at[cluster_id]
+
+        for cluster in clusters:
+            if (
+                cluster.score < self.min_score
+                or abs(cluster.center - current_price) > tolerance
+                or cluster.id in self._fired_at
+            ):
+                continue
+            self._fired_at[cluster.id] = now
+            direction = "BEARISH" if cluster.side.value == "resistance" else "BULLISH"
+            timeframes = ", ".join(dict.fromkeys(member.tf.value for member in cluster.members))
+            message = (
+                f"{direction} ZONE {symbol} {current_price:.2f}\n"
+                f"{cluster.side.value.title()} confluence {cluster.score:g} "
+                f"@ {cluster.low:.2f}-{cluster.high:.2f}\n{timeframes}"
+            )
+            alerts.append(Alert(cluster, message))
+        return alerts

app/analysis/confluence.py

@@ -0,0 +1,78 @@
+from dataclasses import asdict, dataclass
+from hashlib import sha1
+from typing import Any
+
+from app.analysis.levels import Level, Side
+
+
+@dataclass(slots=True)
+class Cluster:
+    id: str
+    side: Side
+    low: float
+    high: float
+    center: float
+    score: float
+    members: list[Level]
+    distance: float
+
+    def to_dict(self) -> dict[str, Any]:
+        value = asdict(self)
+        value["side"] = self.side.value
+        value["members"] = [member.to_dict() for member in self.members]
+        return value
+
+
+def cluster_levels(
+    levels: list[Level], current_t: int, current_price: float, atr15: float
+) -> list[Cluster]:
+    tolerance = 0.4 * atr15
+    if tolerance <= 0:
+        return []
+    groups: list[list[tuple[float, Level]]] = []
+    positioned = [
+        (level.price_at(current_t), level)
+        for level in levels
+        if not level.hidden and (level.cutoff_t is None or current_t <= level.cutoff_t)
+    ]
+    for positional_side in (Side.SUPPORT, Side.RESISTANCE):
+        side_levels = sorted(
+            (
+                item
+                for item in positioned
+                if (Side.RESISTANCE if item[0] >= current_price else Side.SUPPORT)
+                is positional_side
+            ),
+            key=lambda item: item[0],
+        )
+        side_groups: list[list[tuple[float, Level]]] = []
+        for item in side_levels:
+            if not side_groups or item[0] - side_groups[-1][-1][0] > tolerance:
+                side_groups.append([item])
+            else:
+                side_groups[-1].append(item)
+        groups.extend(side_groups)
+
+    clusters: list[Cluster] = []
+    for group in groups:
+        score = sum(level.weight for _, level in group)
+        if len(group) < 2 and score < 8:
+            continue
+        low, high = group[0][0], group[-1][0]
+        center = (low + high) / 2
+        side = Side.RESISTANCE if center >= current_price else Side.SUPPORT
+        identity_bucket = round(center / tolerance)
+        identity = sha1(f"{side.value}:{identity_bucket}".encode()).hexdigest()[:12]
+        clusters.append(
+            Cluster(
+                id=f"cl_{identity}",
+                side=side,
+                low=low,
+                high=high,
+                center=center,
+                score=score,
+                members=[level for _, level in group],
+                distance=center - current_price,
+            )
+        )
+    return sorted(clusters, key=lambda cluster: abs(cluster.distance))

app/analysis/indicators.py

@@ -0,0 +1,40 @@
+from app.bars.models import Bar
+
+
+def sma(values: list[float], period: int) -> list[float | None]:
+    if period <= 0:
+        raise ValueError("period must be positive")
+    output: list[float | None] = [None] * len(values)
+    total = 0.0
+    for index, value in enumerate(values):
+        total += value
+        if index >= period:
+            total -= values[index - period]
+        if index >= period - 1:
+            output[index] = total / period
+    return output
+
+
+def ema(values: list[float], period: int) -> list[float | None]:
+    if period <= 0:
+        raise ValueError("period must be positive")
+    output: list[float | None] = [None] * len(values)
+    if len(values) < period:
+        return output
+    value = sum(values[:period]) / period
+    output[period - 1] = value
+    multiplier = 2 / (period + 1)
+    for index in range(period, len(values)):
+        value = (values[index] - value) * multiplier + value
+        output[index] = value
+    return output
+
+
+def atr(bars: list[Bar], period: int = 14) -> list[float | None]:
+    if period <= 0:
+        raise ValueError("period must be positive")
+    ranges: list[float] = []
+    for index, bar in enumerate(bars):
+        previous_close = bars[index - 1].c if index else bar.c
+        ranges.append(max(bar.h - bar.l, abs(bar.h - previous_close), abs(bar.l - previous_close)))
+    return sma(ranges, period)

app/analysis/levels.py

@@ -0,0 +1,52 @@
+from dataclasses import asdict, dataclass
+from enum import Enum
+from typing import Any
+
+from app.bars.models import Timeframe
+
+
+class LevelKind(str, Enum):
+    MANUAL = "manual"
+    MA = "ma"
+    TRENDLINE = "trendline"
+    HORIZONTAL = "horizontal"
+
+
+class Side(str, Enum):
+    SUPPORT = "support"
+    RESISTANCE = "resistance"
+
+
+@dataclass(slots=True)
+class Level:
+    id: str
+    kind: LevelKind
+    tf: Timeframe
+    side: Side
+    weight: float
+    score: float
+    label: str
+    anchor_t: int
+    anchor_p: float
+    slope: float
+    points: list[tuple[int, float]] | None
+    touches: int
+    first_t: int
+    last_t: int
+    provisional: bool
+    hidden: bool
+    period: int | None = None
+    color: str | None = None
+    line_width: int | None = None
+    number: int | None = None
+    cutoff_t: int | None = None
+
+    def price_at(self, t: int) -> float:
+        return self.anchor_p + self.slope * (t - self.anchor_t)
+
+    def to_dict(self) -> dict[str, Any]:
+        value = asdict(self)
+        value["kind"] = self.kind.value
+        value["tf"] = self.tf.value
+        value["side"] = self.side.value
+        return value

app/analysis/manual_lines.py

@@ -0,0 +1,136 @@
+import json
+from dataclasses import asdict, dataclass, replace
+from pathlib import Path
+from threading import RLock
+
+from app.analysis.levels import Level, LevelKind, Side
+from app.bars.models import Timeframe
+from app.config import TIMEFRAME_WEIGHT
+
+
+@dataclass(slots=True)
+class ManualLine:
+    id: str
+    tf: Timeframe
+    side: Side
+    anchor_t: int
+    anchor_p: float
+    slope: float
+    last_t: int
+    created_at: int
+    note: str = ""
+    hidden: bool = False
+    color: str = "#65b7cf"
+    line_width: int = 2
+    number: int = 0
+    cutoff_t: int | None = None
+
+    def to_level(self) -> Level:
+        return Level(
+            id=self.id,
+            kind=LevelKind.MANUAL,
+            tf=self.tf,
+            side=self.side,
+            weight=TIMEFRAME_WEIGHT[self.tf],
+            score=1.0,
+            label=self.note or f"{self.tf.value} {self.side.value}",
+            anchor_t=self.anchor_t,
+            anchor_p=self.anchor_p,
+            slope=self.slope,
+            points=None,
+            touches=0,
+            first_t=self.anchor_t,
+            last_t=self.last_t,
+            provisional=False,
+            hidden=self.hidden,
+            color=self.color,
+            line_width=self.line_width,
+            number=self.number,
+            cutoff_t=self.cutoff_t,
+        )
+
+    def to_dict(self) -> dict:
+        value = asdict(self)
+        value["tf"] = self.tf.value
+        value["side"] = self.side.value
+        return value
+
+    @classmethod
+    def from_dict(cls, value: dict) -> "ManualLine":
+        return cls(
+            id=str(value["id"]),
+            tf=Timeframe(value["tf"]),
+            side=Side(value["side"]),
+            anchor_t=int(value["anchor_t"]),
+            anchor_p=float(value["anchor_p"]),
+            slope=float(value["slope"]),
+            last_t=int(value.get("last_t", value["anchor_t"])),
+            created_at=int(value["created_at"]),
+            note=str(value.get("note", "")),
+            hidden=bool(value.get("hidden", False)),
+            color=str(value.get("color", "#65b7cf")),
+            line_width=int(value.get("line_width", 2)),
+            number=int(value.get("number", 0)),
+            cutoff_t=int(value["cutoff_t"]) if value.get("cutoff_t") is not None else None,
+        )
+
+
+class ManualLineStore:
+    def __init__(self, path: str | Path):
+        self.path = Path(path)
+        self._lock = RLock()
+        loaded = self.load()
+        next_number = max((line.number for line in loaded), default=0)
+        for index, line in enumerate(loaded):
+            if line.number <= 0:
+                next_number += 1
+                loaded[index] = replace(line, number=next_number)
+        self.lines: dict[str, ManualLine] = {line.id: line for line in loaded}
+
+    def load(self) -> list[ManualLine]:
+        if not self.path.exists():
+            return []
+        payload = json.loads(self.path.read_text(encoding="utf-8"))
+        return [ManualLine.from_dict(value) for value in payload]
+
+    def save(self) -> None:
+        with self._lock:
+            self.path.parent.mkdir(parents=True, exist_ok=True)
+            temporary = self.path.with_suffix(self.path.suffix + ".tmp")
+            temporary.write_text(
+                json.dumps(
+                    [line.to_dict() for line in self.lines.values()],
+                    indent=2,
+                    sort_keys=True,
+                )
+                + "\n",
+                encoding="utf-8",
+            )
+            temporary.replace(self.path)
+
+    def add(self, line: ManualLine) -> ManualLine:
+        with self._lock:
+            if line.number <= 0:
+                line = replace(line, number=max((value.number for value in self.lines.values()), default=0) + 1)
+            self.lines[line.id] = line
+            self.save()
+            return line
+
+    def update(self, line_id: str, changes: dict) -> ManualLine:
+        with self._lock:
+            if line_id not in self.lines:
+                raise KeyError(line_id)
+            line = replace(self.lines[line_id], **changes)
+            self.lines[line_id] = line
+            self.save()
+            return line
+
+    def delete(self, line_id: str) -> None:
+        with self._lock:
+            if line_id not in self.lines:
+                raise KeyError(line_id)
+            del self.lines[line_id]
+            self.save()
+
+    def levels(self) -> list[Level]:
+        return [line.to_level() for line in self.lines.values()]

app/analysis/moving_averages.py

@@ -0,0 +1,62 @@
+from app.analysis.indicators import ema, sma
+from app.analysis.levels import Level, LevelKind, Side
+from app.bars.models import Bar, Timeframe
+from app.config import MA_WEIGHT_FACTOR, TIMEFRAME_WEIGHT
+
+
+MA_FUNCTIONS = {"sma": sma, "ema": ema}
+
+
+def build_ma_levels(
+    bars_by_tf: dict[Timeframe, list[Bar]],
+    ma_sets: dict[Timeframe, list[tuple[str, int]]],
+) -> list[Level]:
+    levels: list[Level] = []
+    for tf, definitions in ma_sets.items():
+        bars = bars_by_tf.get(tf, [])
+        closed_count = sum(bar.closed for bar in bars)
+        closes = [bar.c for bar in bars]
+        for kind, period in definitions:
+            if closed_count < period or kind not in MA_FUNCTIONS:
+                continue
+            values = MA_FUNCTIONS[kind](closes, period)
+            points = [(bar.t, value) for bar, value in zip(bars, values) if value is not None]
+            if not points:
+                continue
+            current = points[-1][1]
+            provisional = not bars[-1].closed
+            levels.append(
+                Level(
+                    id=f"ma:{tf.value}:{kind}:{period}",
+                    kind=LevelKind.MA,
+                    tf=tf,
+                    side=Side.SUPPORT if current <= bars[-1].c else Side.RESISTANCE,
+                    weight=TIMEFRAME_WEIGHT[tf] * MA_WEIGHT_FACTOR,
+                    score=1.0,
+                    label=f"{tf.value} {kind.upper()}{period}",
+                    anchor_t=points[-1][0],
+                    anchor_p=current,
+                    slope=0.0,
+                    points=points,
+                    touches=0,
+                    first_t=points[0][0],
+                    last_t=points[-1][0],
+                    provisional=provisional,
+                    hidden=False,
+                    period=period,
+                )
+            )
+    return levels
+
+
+def project_step(points: list[tuple[int, float]], bars: list[Bar]) -> list[tuple[int, float]]:
+    projected: list[tuple[int, float]] = []
+    point_index = 0
+    current: float | None = None
+    for bar in bars:
+        while point_index < len(points) and points[point_index][0] <= bar.t:
+            current = points[point_index][1]
+            point_index += 1
+        if current is not None:
+            projected.append((bar.t, current))
+    return projected

app/api/__init__.py

@@ -0,0 +1 @@
+"""HTTP and WebSocket API."""

app/api/deps.py

@@ -0,0 +1,30 @@
+import secrets
+
+from fastapi import HTTPException, Request, status
+
+
+def configured_token(app) -> str:
+    runtime = getattr(app.state, "runtime", None)
+    return runtime.settings.chart_auth_token if runtime else ""
+
+
+def token_matches(app, presented: str) -> bool:
+    """True when the caller may proceed.
+
+    An empty CHART_AUTH_TOKEN leaves everything open, which is what local
+    development wants — the check only engages once a token is configured.
+    """
+    want = configured_token(app)
+    if not want:
+        return True
+    return secrets.compare_digest(presented or "", want)
+
+
+def require_token(request: Request) -> None:
+    presented = request.headers.get("x-chart-token") or request.query_params.get("token", "")
+    if not token_matches(request.app, presented):
+        raise HTTPException(
+            status.HTTP_401_UNAUTHORIZED,
+            "Missing or invalid chart token",
+            headers={"WWW-Authenticate": "X-Chart-Token"},
+        )

app/api/meta.py

@@ -0,0 +1,25 @@
+"""Endpoints that stay reachable without a token.
+
+`bin/wait-deploy` polls /api/version from whatever machine you pushed from, so
+requiring the token here would mean carrying it around just to answer "is my
+commit live yet". Neither endpoint exposes anything about the market data or
+the configuration.
+"""
+import os
+
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/api")
+
+# Coolify injects the deployed commit; absent when running locally.
+SOURCE_COMMIT = os.environ.get("SOURCE_COMMIT", "dev")
+
+
+@router.get("/health")
+def health():
+    return {"status": "ok", "service": "chart"}
+
+
+@router.get("/version")
+def version():
+    return {"commit": SOURCE_COMMIT}

app/api/routes.py

@@ -0,0 +1,132 @@
+import time
+import uuid
+
+from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response
+from pydantic import BaseModel, Field
+
+from app.bars.models import Timeframe
+from app.analysis.levels import Side
+from app.analysis.manual_lines import ManualLine
+from app.api.deps import require_token
+
+# Everything here needs the token when CHART_AUTH_TOKEN is set. /health and
+# /version live in app.api.meta and stay open on purpose.
+router = APIRouter(prefix="/api", dependencies=[Depends(require_token)])
+
+
+class LineCreate(BaseModel):
+    tf: Timeframe
+    side: Side
+    anchor_t: int
+    anchor_p: float
+    end_t: int
+    end_p: float
+    note: str = ""
+    hidden: bool = False
+    color: str = Field("#65b7cf", pattern=r"^#[0-9a-fA-F]{6}$")
+    line_width: int = Field(2, ge=1, le=4)
+
+
+class LinePatch(BaseModel):
+    side: Side | None = None
+    note: str | None = None
+    hidden: bool | None = None
+    color: str | None = Field(None, pattern=r"^#[0-9a-fA-F]{6}$")
+    line_width: int | None = Field(None, ge=1, le=4)
+    anchor_t: int | None = None
+    anchor_p: float | None = None
+    slope: float | None = None
+    last_t: int | None = None
+    cutoff_t: int | None = None
+
+
+@router.get("/status")
+def status(request: Request):
+    runtime = request.app.state.runtime
+    return {
+        "stream": runtime.stream.status,
+        "source": runtime.stream.source.name,
+        "delay_minutes": runtime.stream.source.delay_minutes,
+        "symbol": runtime.stream.symbol,
+        "last_bar_t": runtime.stream.last_bar_t,
+        "bars_held": runtime.store.counts(),
+        "warm": {tf.value: bool(runtime.store.get(tf)) for tf in Timeframe},
+    }
+
+
+@router.get("/bars")
+def bars(request: Request, tf: str = "1m", limit: int = Query(500, ge=1, le=5000)):
+    try:
+        timeframe = Timeframe(tf)
+    except ValueError as exc:
+        raise HTTPException(400, "Unknown timeframe") from exc
+    values = request.app.state.runtime.store.get(timeframe, limit)
+    return {"tf": timeframe.value, "bars": [bar.to_dict() for bar in values]}
+
+
+@router.get("/levels")
+def levels(request: Request, tf: str = "all"):
+    values = request.app.state.runtime.levels
+    if tf != "all":
+        try:
+            timeframe = Timeframe(tf)
+        except ValueError as exc:
+            raise HTTPException(400, "Unknown timeframe") from exc
+        values = [level for level in values if level.tf is timeframe]
+    return {"levels": [level.to_dict() for level in values]}
+
+
+@router.get("/confluence")
+def confluence(request: Request):
+    runtime = request.app.state.runtime
+    return {
+        "price": runtime.price,
+        "clusters": [cluster.to_dict() for cluster in runtime.clusters],
+    }
+
+
+@router.post("/lines", status_code=201)
+def create_line(request: Request, payload: LineCreate):
+    if payload.end_t == payload.anchor_t:
+        raise HTTPException(400, "Line endpoints must have different times")
+    line = ManualLine(
+        id=f"ml_{uuid.uuid4().hex}",
+        tf=payload.tf,
+        side=payload.side,
+        anchor_t=payload.anchor_t,
+        anchor_p=payload.anchor_p,
+        slope=(payload.end_p - payload.anchor_p) / (payload.end_t - payload.anchor_t),
+        last_t=payload.end_t,
+        created_at=int(time.time()),
+        note=payload.note,
+        hidden=payload.hidden,
+        color=payload.color,
+        line_width=payload.line_width,
+    )
+    runtime = request.app.state.runtime
+    line = runtime.manual_lines.add(line)
+    runtime.rebuild_levels()
+    return line.to_level().to_dict()
+
+
+@router.patch("/lines/{line_id}")
+def patch_line(request: Request, line_id: str, payload: LinePatch):
+    changes = payload.model_dump(exclude_none=True)
+    if changes.get("anchor_t") == changes.get("last_t") and "anchor_t" in changes:
+        raise HTTPException(400, "Line endpoints must have different times")
+    try:
+        line = request.app.state.runtime.manual_lines.update(line_id, changes)
+    except KeyError as exc:
+        raise HTTPException(404, "Line not found") from exc
+    request.app.state.runtime.rebuild_levels()
+    return line.to_level().to_dict()
+
+
+@router.delete("/lines/{line_id}", status_code=204)
+def delete_line(request: Request, line_id: str):
+    try:
+        request.app.state.runtime.manual_lines.delete(line_id)
+    except KeyError as exc:
+        raise HTTPException(404, "Line not found") from exc
+    request.app.state.runtime.rebuild_levels()
+    return Response(status_code=204)

app/api/ws.py

@@ -0,0 +1,133 @@
+import asyncio
+
+from fastapi import APIRouter, WebSocket, WebSocketDisconnect
+
+from app.api.deps import token_matches
+from app.bars.models import Timeframe
+from app.analysis.alerts import AlertEngine
+from app.analysis.confluence import cluster_levels
+from app.notify.ntfy import send_ntfy
+
+router = APIRouter()
+
+
+def enabled_levels(runtime, prefs: dict | None):
+    if not prefs or prefs.get("hidden_levels_score"):
+        return runtime.levels
+    enabled = prefs.get("enabled", {})
+    ma = enabled.get("ma", {})
+    return [
+        level
+        for level in runtime.levels
+        if (level.kind.value == "ma" and level.period in ma.get(level.tf.value, []))
+        or (level.kind.value == "manual" and enabled.get("manual", True))
+        or (level.kind.value == "trendline" and enabled.get("auto", False))
+    ]
+
+
+def connection_clusters(runtime, prefs: dict | None):
+    if runtime.price is None or runtime.stream.last_bar_t is None:
+        return []
+    return cluster_levels(
+        enabled_levels(runtime, prefs), runtime.stream.last_bar_t, runtime.price, runtime.atr15
+    )
+
+
+def snapshot(runtime, tf: Timeframe, prefs: dict | None = None) -> dict:
+    return {
+        "type": "snapshot",
+        "tf": tf.value,
+        "bars": [bar.to_dict() for bar in runtime.store.get(tf, 1000)],
+        "levels": [level.to_dict() for level in runtime.levels],
+        "clusters": [cluster.to_dict() for cluster in connection_clusters(runtime, prefs)],
+        "price": runtime.store.get(Timeframe.M1, 1)[-1].c
+        if runtime.store.get(Timeframe.M1, 1)
+        else None,
+    }
+
+
+@router.websocket("/ws")
+async def websocket_endpoint(websocket: WebSocket):
+    # Browsers cannot set headers on a WebSocket handshake, so the token comes
+    # in as a query parameter here. 1008 = policy violation.
+    if not token_matches(websocket.app, websocket.query_params.get("token", "")):
+        await websocket.close(code=1008, reason="Missing or invalid chart token")
+        return
+    await websocket.accept()
+    runtime = websocket.app.state.runtime
+    queue: asyncio.Queue = asyncio.Queue(maxsize=100)
+    runtime.subscribers.add(queue)
+    tf = Timeframe.M1
+    prefs = None
+    alert_engine = AlertEngine(
+        runtime.settings.confluence_min_score, runtime.settings.alert_cooldown_seconds
+    )
+    await websocket.send_json(snapshot(runtime, tf, prefs))
+
+    async def receive():
+        nonlocal tf, prefs
+        try:
+            while True:
+                message = await websocket.receive_json()
+                if message.get("type") == "subscribe":
+                    tf = Timeframe(message.get("tf", "1m"))
+                    await websocket.send_json(snapshot(runtime, tf, prefs))
+                elif message.get("type") == "prefs":
+                    prefs = message
+                    clusters = connection_clusters(runtime, prefs)
+                    await websocket.send_json(
+                        {
+                            "type": "clusters",
+                            "price": runtime.price,
+                            "clusters": [cluster.to_dict() for cluster in clusters],
+                        }
+                    )
+        except WebSocketDisconnect:
+            queue.put_nowait({"type": "disconnect"})
+
+    receiver = asyncio.create_task(receive())
+    try:
+        while True:
+            event = await queue.get()
+            if event["type"] == "disconnect":
+                break
+            if event["type"] == "bar" and event["bar"].tf is tf:
+                await websocket.send_json(
+                    {"type": "bar", "tf": tf.value, "bar": event["bar"].to_dict()}
+                )
+            elif event["type"] == "levels":
+                await websocket.send_json(
+                    {"type": "levels", "levels": [level.to_dict() for level in event["levels"]]}
+                )
+            elif event["type"] == "clusters":
+                clusters = connection_clusters(runtime, prefs)
+                await websocket.send_json(
+                    {
+                        "type": "clusters",
+                        "price": runtime.price,
+                        "clusters": [cluster.to_dict() for cluster in clusters],
+                    }
+                )
+                alerts = (
+                    alert_engine.evaluate(
+                        clusters,
+                        runtime.price,
+                        runtime.atr15,
+                        runtime.stream.last_bar_t or 0,
+                        runtime.stream.symbol,
+                    )
+                    if event.get("evaluate_alerts")
+                    else []
+                )
+                for alert in alerts:
+                    await websocket.send_json(
+                        {"type": "alert", "cluster": alert.cluster.to_dict(), "message": alert.message}
+                    )
+                    await send_ntfy(
+                        runtime.settings.ntfy_server, runtime.settings.ntfy_topic, alert.message
+                    )
+    except (WebSocketDisconnect, asyncio.CancelledError):
+        pass
+    finally:
+        receiver.cancel()
+        runtime.subscribers.discard(queue)

app/bars/__init__.py

@@ -0,0 +1 @@
+"""Bar models, storage, and aggregation."""

app/bars/aggregator.py

@@ -0,0 +1,57 @@
+from dataclasses import replace
+
+from app.bars.models import Bar, Timeframe
+from app.bars.session import bucket_start
+
+
+class Aggregator:
+    def __init__(self, timeframes: list[Timeframe] | None = None):
+        self.timeframes = timeframes or list(Timeframe)
+        self.forming: dict[Timeframe, Bar] = {}
+
+    @staticmethod
+    def _can_aggregate(source: Timeframe, target: Timeframe) -> bool:
+        if source is Timeframe.M1:
+            return True
+        if source is Timeframe.H1:
+            return target in (Timeframe.H1, Timeframe.H4, Timeframe.D1)
+        return source is target
+
+    def update(self, incoming: Bar) -> list[Bar]:
+        emitted: list[Bar] = []
+        for tf in self.timeframes:
+            if not self._can_aggregate(incoming.tf, tf):
+                continue
+            if tf is incoming.tf:
+                emitted.append(replace(incoming))
+                continue
+
+            start = bucket_start(incoming.t, tf)
+            current = self.forming.get(tf)
+            if current is not None and start < current.t:
+                continue
+            if current is None or start > current.t:
+                if current is not None:
+                    emitted.append(replace(current, closed=True))
+                current = Bar(
+                    tf=tf,
+                    t=start,
+                    o=incoming.o,
+                    h=incoming.h,
+                    l=incoming.l,
+                    c=incoming.c,
+                    v=incoming.v,
+                    closed=False,
+                    symbol=incoming.symbol,
+                    source=incoming.source,
+                )
+                self.forming[tf] = current
+            else:
+                current.h = max(current.h, incoming.h)
+                current.l = min(current.l, incoming.l)
+                current.c = incoming.c
+                current.v += incoming.v
+                current.symbol = incoming.symbol
+                current.source = incoming.source
+            emitted.append(replace(current))
+        return emitted

app/bars/models.py

@@ -0,0 +1,63 @@
+from dataclasses import asdict, dataclass
+from enum import Enum
+from typing import Any
+
+
+class Timeframe(str, Enum):
+    M1 = "1m"
+    M2 = "2m"
+    M5 = "5m"
+    M15 = "15m"
+    M30 = "30m"
+    H1 = "1h"
+    H4 = "4h"
+    D1 = "1d"
+
+    @property
+    def seconds(self) -> int:
+        seconds = {
+            self.M1: 60,
+            self.M2: 120,
+            self.M5: 300,
+            self.M15: 900,
+            self.M30: 1800,
+            self.H1: 3600,
+            self.H4: 14400,
+        }
+        if self is self.D1:
+            raise ValueError("1d is session-defined, not a fixed number of seconds")
+        return seconds[self]
+
+
+@dataclass(slots=True)
+class Bar:
+    tf: Timeframe
+    t: int
+    o: float
+    h: float
+    l: float
+    c: float
+    v: int
+    closed: bool
+    symbol: str
+    source: str
+
+    def to_dict(self) -> dict[str, Any]:
+        value = asdict(self)
+        value["tf"] = self.tf.value
+        return value
+
+    @classmethod
+    def from_dict(cls, value: dict[str, Any]) -> "Bar":
+        return cls(
+            tf=Timeframe(value["tf"]),
+            t=int(value["t"]),
+            o=float(value["o"]),
+            h=float(value["h"]),
+            l=float(value["l"]),
+            c=float(value["c"]),
+            v=int(value.get("v") or 0),
+            closed=bool(value["closed"]),
+            symbol=str(value["symbol"]),
+            source=str(value["source"]),
+        )

app/bars/session.py

@@ -0,0 +1,30 @@
+from datetime import datetime, time, timedelta
+from zoneinfo import ZoneInfo
+
+from app.bars.models import Timeframe
+
+UTC = ZoneInfo("UTC")
+EASTERN = ZoneInfo("America/New_York")
+SESSION_OPEN = time(18, 0)
+
+
+def _session_open_local(current: datetime) -> datetime:
+    session_date = current.date() if current.timetz().replace(tzinfo=None) >= SESSION_OPEN else current.date() - timedelta(days=1)
+    return datetime.combine(session_date, SESSION_OPEN, EASTERN)
+
+
+def bucket_start(t: int, tf: Timeframe) -> int:
+    if tf not in (Timeframe.H4, Timeframe.D1):
+        return (t // tf.seconds) * tf.seconds
+
+    current = datetime.fromtimestamp(t, UTC).astimezone(EASTERN)
+    session_open = _session_open_local(current)
+    if tf is Timeframe.D1:
+        return int(session_open.timestamp())
+
+    # CME's 4h anchors are wall-clock ET anchors. This intentionally makes the
+    # DST-transition bucket three or five elapsed hours instead of shifting it.
+    elapsed_wall = current.replace(tzinfo=None) - session_open.replace(tzinfo=None)
+    bucket_hours = int(elapsed_wall.total_seconds() // 14400) * 4
+    local_start = session_open.replace(tzinfo=None) + timedelta(hours=bucket_hours)
+    return int(local_start.replace(tzinfo=EASTERN).timestamp())

app/bars/store.py

@@ -0,0 +1,31 @@
+from collections import defaultdict, deque
+from typing import Protocol
+
+from app.bars.models import Bar, Timeframe
+
+
+class BarStore(Protocol):
+    def put(self, bar: Bar) -> None: ...
+
+    def get(self, tf: Timeframe, limit: int | None = None) -> list[Bar]: ...
+
+
+class InMemoryBarStore:
+    def __init__(self, max_bars_per_tf: int = 5000):
+        self._bars: dict[Timeframe, deque[Bar]] = defaultdict(
+            lambda: deque(maxlen=max_bars_per_tf)
+        )
+
+    def put(self, bar: Bar) -> None:
+        bars = self._bars[bar.tf]
+        if bars and bars[-1].t == bar.t:
+            bars[-1] = bar
+        elif not bars or bar.t > bars[-1].t:
+            bars.append(bar)
+
+    def get(self, tf: Timeframe, limit: int | None = None) -> list[Bar]:
+        bars = list(self._bars[tf])
+        return bars[-limit:] if limit is not None else bars
+
+    def counts(self) -> dict[str, int]:
+        return {tf.value: len(self._bars[tf]) for tf in Timeframe}

app/config.py

@@ -0,0 +1,63 @@
+from pathlib import Path
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+from app.bars.models import Timeframe
+
+
+TIMEFRAME_WEIGHT = {
+    Timeframe.M1: 1,
+    Timeframe.M2: 1,
+    Timeframe.M5: 1,
+    Timeframe.M15: 2,
+    Timeframe.M30: 3,
+    Timeframe.H1: 4,
+    Timeframe.H4: 8,
+    Timeframe.D1: 16,
+}
+MA_WEIGHT_FACTOR = 0.75
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env", extra="ignore")
+
+    live_source: str = "yahoo"
+    seed_source: str = "yahoo"
+    yahoo_symbol: str = "ES=F"
+    yahoo_poll_seconds: float = 20
+    seed_1h_range: str = "730d"
+    seed_1m_range: str = "8d"
+    timeframes: str = "1m,5m,15m,30m,1h,1d"
+    base_timeframes: str = "1m,30m,1d"
+    max_bars_per_tf: int = 5000
+    ma_sets__1d: str = "sma10,sma20,sma50,sma100,sma200"
+    ma_sets__1h: str = ""
+    daily_anchor_et: str = "18:00"
+    manual_lines_path: Path = Path("./data/manual_lines.json")
+    confluence_min_score: float = 28
+    alert_cooldown_seconds: int = 900
+    ntfy_topic: str = ""
+    ntfy_server: str = "https://ntfy.sh"
+    chart_auth_token: str = ""
+    replay_file: Path | None = None
+
+    @property
+    def enabled_timeframes(self) -> list[Timeframe]:
+        return [Timeframe(value.strip()) for value in self.timeframes.split(",") if value.strip()]
+
+    @property
+    def ma_sets(self) -> dict[Timeframe, list[tuple[str, int]]]:
+        configured = {
+            Timeframe.D1: self.ma_sets__1d,
+            Timeframe.H1: self.ma_sets__1h,
+        }
+        result: dict[Timeframe, list[tuple[str, int]]] = {}
+        for tf, value in configured.items():
+            definitions = []
+            for item in filter(None, (part.strip().lower() for part in value.split(","))):
+                kind = "sma" if item.startswith("sma") else "ema" if item.startswith("ema") else ""
+                if not kind or not item[len(kind) :].isdigit():
+                    raise ValueError(f"Invalid MA definition: {item}")
+                definitions.append((kind, int(item[len(kind) :])))
+            result[tf] = definitions
+        return result

app/market/__init__.py

@@ -0,0 +1 @@
+"""Pluggable market data sources."""

app/market/base.py

@@ -0,0 +1,25 @@
+from collections.abc import AsyncIterator
+from typing import Protocol
+
+from app.bars.models import Bar, Timeframe
+
+
+class MarketDataSource(Protocol):
+    name: str
+    delay_minutes: int
+
+    def supports_history(self) -> bool: ...
+
+    async def history(
+        self,
+        symbol: str,
+        tf: Timeframe,
+        start: int | None,
+        end: int | None,
+        *,
+        range_: str | None = None,
+    ) -> list[Bar]: ...
+
+    def supports_stream(self) -> bool: ...
+
+    def stream(self, symbol: str) -> AsyncIterator[Bar]: ...

app/market/factory.py

@@ -0,0 +1,22 @@
+from app.config import Settings
+from app.market.base import MarketDataSource
+from app.market.replay import ReplaySource
+from app.market.yahoo import YahooSource
+
+
+def live_source(settings: Settings) -> MarketDataSource:
+    if settings.live_source == "yahoo":
+        return YahooSource(settings.yahoo_poll_seconds)
+    if settings.live_source == "replay" and settings.replay_file:
+        return ReplaySource(settings.replay_file)
+    raise ValueError(f"Unsupported LIVE_SOURCE: {settings.live_source}")
+
+
+def seed_source(settings: Settings) -> MarketDataSource | None:
+    if settings.seed_source == "none":
+        return None
+    if settings.seed_source == "yahoo":
+        return YahooSource(settings.yahoo_poll_seconds)
+    if settings.seed_source == "replay" and settings.replay_file:
+        return ReplaySource(settings.replay_file)
+    raise ValueError(f"Unsupported SEED_SOURCE: {settings.seed_source}")

app/market/recorder.py

@@ -0,0 +1,20 @@
+import json
+import time
+from collections.abc import AsyncIterator
+from pathlib import Path
+
+from app.bars.models import Bar
+
+
+class Recorder:
+    def __init__(self, path: str | Path):
+        self.path = Path(path)
+
+    async def record(self, stream: AsyncIterator[Bar]) -> AsyncIterator[Bar]:
+        self.path.parent.mkdir(parents=True, exist_ok=True)
+        with self.path.open("a", encoding="utf-8") as tape:
+            async for bar in stream:
+                row = {"arrival_t": time.time(), "bar": bar.to_dict()}
+                tape.write(json.dumps(row, sort_keys=True, separators=(",", ":")) + "\n")
+                tape.flush()
+                yield bar

app/market/replay.py

@@ -0,0 +1,57 @@
+import asyncio
+import json
+from collections.abc import AsyncIterator
+from pathlib import Path
+
+from app.bars.models import Bar, Timeframe
+
+
+class ReplaySource:
+    name = "replay"
+    delay_minutes = 0
+
+    def __init__(self, path: str | Path, speed: float = 0):
+        self.path = Path(path)
+        self.speed = speed
+
+    def supports_history(self) -> bool:
+        return True
+
+    def supports_stream(self) -> bool:
+        return True
+
+    def _rows(self) -> list[dict]:
+        if not self.path.exists():
+            return []
+        with self.path.open(encoding="utf-8") as tape:
+            return [json.loads(line) for line in tape if line.strip()]
+
+    async def history(
+        self,
+        symbol: str,
+        tf: Timeframe,
+        start: int | None = None,
+        end: int | None = None,
+        *,
+        range_: str | None = None,
+    ) -> list[Bar]:
+        return [
+            bar
+            for row in self._rows()
+            if (bar := Bar.from_dict(row["bar"])).tf is tf
+            and (not symbol or bar.symbol == symbol)
+            and (start is None or bar.t >= start)
+            and (end is None or bar.t < end)
+        ]
+
+    async def stream(self, symbol: str) -> AsyncIterator[Bar]:
+        previous_arrival: float | None = None
+        for row in self._rows():
+            bar = Bar.from_dict(row["bar"])
+            if symbol and bar.symbol != symbol:
+                continue
+            arrival = float(row["arrival_t"])
+            if self.speed > 0 and previous_arrival is not None:
+                await asyncio.sleep(max(0, arrival - previous_arrival) / self.speed)
+            previous_arrival = arrival
+            yield bar

app/market/stream.py

@@ -0,0 +1,60 @@
+import asyncio
+import logging
+from collections.abc import Awaitable, Callable
+
+from app.bars.models import Bar, Timeframe
+from app.market.base import MarketDataSource
+
+logger = logging.getLogger(__name__)
+BarHandler = Callable[[Bar], Awaitable[None]]
+
+
+class StreamService:
+    def __init__(self, source: MarketDataSource, symbol: str):
+        self.source = source
+        self.symbol = symbol
+        self.status = "disconnected"
+        self.last_bar_t: int | None = None
+        self._handlers: list[BarHandler] = []
+        self._stop = asyncio.Event()
+
+    def add_handler(self, handler: BarHandler) -> None:
+        self._handlers.append(handler)
+
+    async def seed(
+        self, source: MarketDataSource | None, tf: Timeframe, range_: str
+    ) -> None:
+        if source is None or not source.supports_history():
+            return
+        bars = await source.history(self.symbol, tf, None, None, range_=range_)
+        for bar in bars:
+            await self._emit(bar)
+
+    async def _emit(self, bar: Bar) -> None:
+        self.last_bar_t = max(self.last_bar_t or bar.t, bar.t)
+        for handler in self._handlers:
+            await handler(bar)
+
+    async def run(self) -> None:
+        while not self._stop.is_set():
+            try:
+                self.status = "replay" if self.source.name == "replay" else "connected"
+                async for bar in self.source.stream(self.symbol):
+                    await self._emit(bar)
+                    if self._stop.is_set():
+                        break
+                if self.source.name == "replay":
+                    return
+            except asyncio.CancelledError:
+                raise
+            except Exception:
+                logger.exception("Market stream failed; reconnecting")
+            self.status = "disconnected"
+            try:
+                await asyncio.wait_for(self._stop.wait(), timeout=5)
+            except TimeoutError:
+                pass
+
+    def stop(self) -> None:
+        self._stop.set()
+        self.status = "disconnected"

app/market/yahoo.py

@@ -0,0 +1,117 @@
+import asyncio
+from collections.abc import AsyncIterator
+from typing import Any
+
+import httpx
+
+from app.bars.models import Bar, Timeframe
+
+YAHOO_CHART_URL = "https://query1.finance.yahoo.com/v8/finance/chart/{symbol}"
+MAX_1M_WINDOW_SECONDS = 8 * 24 * 60 * 60
+
+
+def parse_chart(payload: dict[str, Any], tf: Timeframe, source: str = "yahoo") -> list[Bar]:
+    chart = payload.get("chart", {})
+    if chart.get("error"):
+        raise ValueError(f"Yahoo chart error: {chart['error']}")
+    results = chart.get("result") or []
+    if not results:
+        return []
+
+    result = results[0]
+    timestamps = result.get("timestamp") or []
+    quotes = ((result.get("indicators") or {}).get("quote") or [{}])[0]
+    symbol = str((result.get("meta") or {}).get("symbol") or "")
+    arrays = [quotes.get(key) or [] for key in ("open", "high", "low", "close", "volume")]
+    bars: list[Bar] = []
+    for values in zip(timestamps, *arrays, strict=False):
+        t, open_, high, low, close, volume = values
+        if any(value is None for value in (t, open_, high, low, close)):
+            continue
+        bars.append(
+            Bar(
+                tf=tf,
+                t=int(t),
+                o=float(open_),
+                h=float(high),
+                l=float(low),
+                c=float(close),
+                v=int(volume or 0),
+                closed=True,
+                symbol=symbol,
+                source=source,
+            )
+        )
+    return bars
+
+
+class YahooSource:
+    name = "yahoo"
+    delay_minutes = 10
+
+    def __init__(self, poll_seconds: float = 20, client: httpx.AsyncClient | None = None):
+        self.poll_seconds = poll_seconds
+        self._client = client
+
+    def supports_history(self) -> bool:
+        return True
+
+    def supports_stream(self) -> bool:
+        return True
+
+    async def _fetch(self, symbol: str, params: dict[str, str | int]) -> dict[str, Any]:
+        owns_client = self._client is None
+        client = self._client or httpx.AsyncClient(
+            headers={"User-Agent": "Mozilla/5.0 chart.amow.com"}, timeout=30
+        )
+        try:
+            response = await client.get(YAHOO_CHART_URL.format(symbol=symbol), params=params)
+            response.raise_for_status()
+            return response.json()
+        finally:
+            if owns_client:
+                await client.aclose()
+
+    async def history(
+        self,
+        symbol: str,
+        tf: Timeframe,
+        start: int | None = None,
+        end: int | None = None,
+        *,
+        range_: str | None = None,
+    ) -> list[Bar]:
+        if tf not in (Timeframe.M1, Timeframe.H1):
+            raise ValueError("YahooSource history supports only 1m and 1h inputs")
+        interval = tf.value
+        if range_ is not None:
+            return parse_chart(
+                await self._fetch(symbol, {"interval": interval, "range": range_}), tf
+            )
+        if start is None or end is None:
+            raise ValueError("start/end or range_ is required")
+        if end <= start:
+            return []
+
+        window = MAX_1M_WINDOW_SECONDS if tf is Timeframe.M1 else end - start
+        by_time: dict[int, Bar] = {}
+        cursor = start
+        while cursor < end:
+            window_end = min(cursor + window, end)
+            payload = await self._fetch(
+                symbol,
+                {"interval": interval, "period1": cursor, "period2": window_end},
+            )
+            by_time.update((bar.t, bar) for bar in parse_chart(payload, tf))
+            cursor = window_end
+        return [by_time[t] for t in sorted(by_time)]
+
+    async def stream(self, symbol: str) -> AsyncIterator[Bar]:
+        last_emitted = -1
+        while True:
+            bars = await self.history(symbol, Timeframe.M1, range_="1d")
+            for bar in bars:
+                if bar.t > last_emitted:
+                    yield bar
+                    last_emitted = bar.t
+            await asyncio.sleep(self.poll_seconds)

app/notify/__init__.py

@@ -0,0 +1 @@
+"""Alert notification transports."""

app/notify/ntfy.py

@@ -0,0 +1,13 @@
+import httpx
+
+
+async def send_ntfy(server: str, topic: str, message: str) -> None:
+    if not topic:
+        return
+    async with httpx.AsyncClient(timeout=10) as client:
+        response = await client.post(
+            f"{server.rstrip('/')}/{topic}",
+            content=message,
+            headers={"Title": "/ES confluence", "Priority": "high", "Tags": "chart_with_upwards_trend"},
+        )
+        response.raise_for_status()

app/runtime.py

@@ -0,0 +1,90 @@
+import asyncio
+from dataclasses import dataclass, field
+
+from app.bars.models import Bar, Timeframe
+from app.bars.aggregator import Aggregator
+from app.analysis.levels import Level
+from app.analysis.moving_averages import build_ma_levels
+from app.analysis.confluence import Cluster, cluster_levels
+from app.analysis.indicators import atr
+from app.analysis.manual_lines import ManualLineStore
+from app.bars.store import InMemoryBarStore
+from app.config import Settings
+from app.market.factory import live_source, seed_source
+from app.market.stream import StreamService
+
+
+@dataclass
+class Runtime:
+    settings: Settings
+    store: InMemoryBarStore = field(init=False)
+    stream: StreamService = field(init=False)
+    subscribers: set[asyncio.Queue[dict]] = field(default_factory=set)
+    aggregator: Aggregator = field(init=False)
+    levels: list[Level] = field(default_factory=list)
+    clusters: list[Cluster] = field(default_factory=list)
+    price: float | None = None
+    atr15: float = 0.0
+    manual_lines: ManualLineStore = field(init=False)
+    ma_levels: list[Level] = field(default_factory=list)
+
+    def __post_init__(self) -> None:
+        self.store = InMemoryBarStore(self.settings.max_bars_per_tf)
+        self.aggregator = Aggregator(self.settings.enabled_timeframes)
+        self.manual_lines = ManualLineStore(self.settings.manual_lines_path)
+        self.levels = self.manual_lines.levels()
+        self.stream = StreamService(live_source(self.settings), self.settings.yahoo_symbol)
+        self.stream.add_handler(self.on_bar)
+
+    async def on_bar(self, bar: Bar) -> None:
+        evaluate_alerts = False
+        for aggregated in self.aggregator.update(bar):
+            self.store.put(aggregated)
+            self.broadcast({"type": "bar", "bar": aggregated})
+            if self.settings.ma_sets.get(aggregated.tf):
+                self.rebuild_levels()
+            if aggregated.tf is Timeframe.M1 and aggregated.closed:
+                self.price = aggregated.c
+                evaluate_alerts = True
+        if evaluate_alerts:
+            values = atr(self.store.get(Timeframe.M15), 14)
+            self.atr15 = next((value for value in reversed(values) if value is not None), 0.0)
+            self.rebuild_clusters(evaluate_alerts=True)
+
+    def broadcast(self, event: dict) -> None:
+        for queue in self.subscribers.copy():
+            if queue.full():
+                queue.get_nowait()
+            queue.put_nowait(event)
+
+    def rebuild_levels(self) -> None:
+        self.ma_levels = build_ma_levels(
+            {tf: self.store.get(tf) for tf in self.settings.ma_sets},
+            self.settings.ma_sets,
+        )
+        self.levels = self.ma_levels + self.manual_lines.levels()
+        self.broadcast({"type": "levels", "levels": self.levels})
+        self.rebuild_clusters()
+
+    def rebuild_clusters(self, evaluate_alerts: bool = False) -> None:
+        if self.price is None or self.stream.last_bar_t is None:
+            return
+        self.clusters = cluster_levels(self.levels, self.stream.last_bar_t, self.price, self.atr15)
+        self.broadcast(
+            {
+                "type": "clusters",
+                "price": self.price,
+                "clusters": self.clusters,
+                "evaluate_alerts": evaluate_alerts,
+            }
+        )
+
+    async def start(self) -> asyncio.Task:
+        try:
+            source = seed_source(self.settings)
+            await self.stream.seed(source, Timeframe.H1, self.settings.seed_1h_range)
+            await self.stream.seed(source, Timeframe.M1, self.settings.seed_1m_range)
+        except Exception:
+            # A transient seed failure must not prevent the live stream or UI starting.
+            pass
+        return asyncio.create_task(self.stream.run(), name="market-stream")

docker-compose.yml

@@ -6,12 +6,22 @@ services:
       context: .
       dockerfile: Dockerfile.dev
     ports:
-      # Host port is overridable: `PORT=8010 docker compose up`. On the VPS
+      # Host port is overridable. Port 8000 is already used by Coolify on the VPS.
-      # itself 8000 is already taken by the Coolify UI.
+      - "0.0.0.0:${PORT:-8010}:8000"
-      - "${PORT:-8000}:8000"
     volumes:
       # Bind-mount the source so --reload picks up edits without a rebuild.
       - .:/app
     environment:
       - PYTHONDONTWRITEBYTECODE=1
       - PYTHONUNBUFFERED=1
+
+  playwright:
+    image: mcr.microsoft.com/playwright:v1.55.0-noble
+    command: sh -c "npm install --global playwright@1.55.0 && sleep infinity"
+    depends_on:
+      - api
+    ipc: host
+    environment:
+      - LANG=en_US.UTF-8
+    volumes:
+      - ./artifacts/playwright:/artifacts

main.py

@@ -1,41 +1,41 @@
-"""chart.amow.com — FastAPI backend.
+"""chart.amow.com FastAPI backend."""
-
+import asyncio
-Placeholder app: serves the Vue 3 single-page frontend from static/ and a
+from contextlib import asynccontextmanager
-couple of JSON endpoints under /api. Replace the endpoints as the real app
-takes shape; the serving/deploy wiring below does not need to change.
-"""
-import os
 from pathlib import Path
 
 from fastapi import FastAPI
 from fastapi.responses import FileResponse
 from fastapi.staticfiles import StaticFiles
 
+from app.api.meta import router as meta_router
+from app.api.routes import router as api_router
+from app.api.ws import router as ws_router
+from app.config import Settings
+from app.runtime import Runtime
+
 BASE_DIR = Path(__file__).parent
 STATIC_DIR = BASE_DIR / "static"
 
-# Coolify injects the deployed commit; absent when running locally.
+@asynccontextmanager
-SOURCE_COMMIT = os.environ.get("SOURCE_COMMIT", "dev")
+async def lifespan(app: FastAPI):
+    runtime = Runtime(Settings())
+    app.state.runtime = runtime
+    task = await runtime.start()
+    yield
+    runtime.stream.stop()
+    task.cancel()
+    try:
+        await task
+    except asyncio.CancelledError:
+        pass
 
-app = FastAPI(title="chart")
+
+app = FastAPI(title="chart", lifespan=lifespan)
 
 app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
-
+app.include_router(meta_router)
-
+app.include_router(api_router)
-@app.get("/api/health")
+app.include_router(ws_router)
-def health():
-    return {"status": "ok", "service": "chart"}
-
-
-@app.get("/api/version")
-def version():
-    """Which commit is actually serving. `bin/wait-deploy` polls this."""
-    return {"commit": SOURCE_COMMIT}
-
-
-@app.get("/api/hello")
-def hello():
-    return {"msg": "this is fing awesome"}
 
 
 @app.get("/")

requirements-dev.txt

@@ -0,0 +1,2 @@
+pytest
+pytest-asyncio

requirements.txt

@@ -1,2 +1,4 @@
 fastapi
 uvicorn[standard]
+httpx
+pydantic-settings

scripts/calibrate_alerts.py

@@ -0,0 +1,56 @@
+"""Replay Yahoo's available minute tape and report alerts per CME session."""
+import asyncio
+from collections import Counter
+
+from app.analysis.alerts import AlertEngine
+from app.analysis.confluence import cluster_levels
+from app.analysis.indicators import atr
+from app.analysis.moving_averages import build_ma_levels
+from app.bars.aggregator import Aggregator
+from app.bars.models import Timeframe
+from app.bars.session import bucket_start
+from app.bars.store import InMemoryBarStore
+from app.config import Settings
+from app.market.yahoo import YahooSource
+
+
+async def main() -> None:
+    settings = Settings()
+    source = YahooSource(settings.yahoo_poll_seconds)
+    hourly, minutes = await asyncio.gather(
+        source.history(settings.yahoo_symbol, Timeframe.H1, range_=settings.seed_1h_range),
+        source.history(settings.yahoo_symbol, Timeframe.M1, range_=settings.seed_1m_range),
+    )
+    if not minutes:
+        raise RuntimeError("Yahoo returned no minute tape")
+
+    aggregator = Aggregator(settings.enabled_timeframes)
+    store = InMemoryBarStore(25_000)
+    levels = []
+    cutoff = minutes[0].t
+    for source_bar in [bar for bar in hourly if bar.t < cutoff] + minutes:
+        for bar in aggregator.update(source_bar):
+            store.put(bar)
+            if settings.ma_sets.get(bar.tf):
+                levels = build_ma_levels(
+                    {tf: store.get(tf) for tf in settings.ma_sets}, settings.ma_sets
+                )
+            if bar.tf is not Timeframe.M1 or not bar.closed:
+                continue
+            atr_values = atr(store.get(Timeframe.M15), 14)
+            atr15 = next((value for value in reversed(atr_values) if value is not None), 0.0)
+            clusters = cluster_levels(levels, bar.t, bar.c, atr15)
+            alerts = engine.evaluate(clusters, bar.c, atr15, bar.t, settings.yahoo_symbol)
+            counts[bucket_start(bar.t, Timeframe.D1)] += len(alerts)
+
+    print(f"threshold={settings.confluence_min_score:g} minute_bars={len(minutes)}")
+    print("alerts/session:", ", ".join(str(value) for _, value in sorted(counts.items())))
+    print(f"total={sum(counts.values())} max_session={max(counts.values(), default=0)}")
+
+
+settings = Settings()
+engine = AlertEngine(settings.confluence_min_score, settings.alert_cooldown_seconds)
+counts: Counter[int] = Counter()
+
+if __name__ == "__main__":
+    asyncio.run(main())

static/app.js

@@ -1,25 +1,353 @@
-const { createApp, ref } = Vue;
+const { createApp, ref, computed, watch, onMounted, onUnmounted } = Vue;
+
+// Shared access token. Blank when the server runs without CHART_AUTH_TOKEN,
+// which is the normal local-development case — nothing prompts.
+const TOKEN_KEY = 'chart-token';
+let authToken = localStorage.getItem(TOKEN_KEY) || '';
+
+// Reconnects and the status poll both hit 401s, so without this a visitor
+// who cancels gets asked again every couple of seconds.
+let promptDeclined = false;
+
+function promptForToken() {
+  if (promptDeclined) return false;
+  const entered = window.prompt('Access token for this chart', '');
+  if (entered === null) {
+    promptDeclined = true;
+    return false;
+  }
+  authToken = entered.trim();
+  localStorage.setItem(TOKEN_KEY, authToken);
+  return true;
+}
+
+async function apiFetch(url, options = {}) {
+  const send = () => fetch(url, {
+    ...options,
+    headers: authToken
+      ? { ...(options.headers || {}), 'X-Chart-Token': authToken }
+      : { ...(options.headers || {}) },
+  });
+  const response = await send();
+  // A 401 means nothing was written, so retrying the same request is safe.
+  if (response.status === 401 && promptForToken()) return send();
+  return response;
+}
+
+const defaultPrefs = {
+  base_tf: '1m',
+  enabled: { ma: { '1d': [10, 20, 50, 100, 200], '1h': [] }, manual: true, auto: false },
+  hidden_levels_score: false,
+};
 
 createApp({
   setup() {
-    const result = ref('');
+    const status = ref({ stream: 'disconnected', bars_held: {} });
-    const error = ref('');
+    const price = ref(null);
-    const loading = ref(false);
+    const storedPrefs = localStorage.getItem('chart-layer-prefs');
+    const prefs = ref(storedPrefs ? JSON.parse(storedPrefs) : structuredClone(defaultPrefs));
+    const timeframe = ref(prefs.value.base_tf || '1m');
+    const levels = ref([]);
+    const clusters = ref([]);
+    const alerts = ref([]);
+    const drawMode = ref(false);
+    const drawName = ref('');
+    const drawColor = ref('#65b7cf');
+    const drawWidth = ref(2);
+    const drawSide = ref('support');
+    const snap = ref(true);
+    const drawPoints = ref([]);
+    const selectedLine = ref(null);
+    const selectedLines = ref([]);
+    const timeframes = ['1m', '5m', '15m', '30m', '1h', '1d'];
+    const now = ref(Date.now());
+    let chartApi = null;
+    let socket = null;
+    let retryDelay = 2000;
+    let timer = null;
 
-    async function ping() {
+    const barAge = computed(() => {
-      loading.value = true;
+      if (!status.value.last_bar_t) return '—';
-      error.value = '';
+      const seconds = Math.max(0, Math.floor(now.value / 1000 - status.value.last_bar_t));
+      return seconds < 60 ? `${seconds}s` : `${Math.floor(seconds / 60)}m`;
+    });
+    const manualLines = computed(() => levels.value.filter(level => level.kind === 'manual'));
+    const hasLineSelection = computed(() => selectedLines.value.length > 0 || selectedLine.value != null);
+    const allManualSelected = computed(() => manualLines.value.length > 0 && selectedLines.value.length === manualLines.value.length);
+
+    async function refreshStatus() {
+      const response = await apiFetch('/api/status');
+      if (response.ok) status.value = await response.json();
+    }
+
+    function connect() {
+      const protocol = location.protocol === 'https:' ? 'wss' : 'ws';
+      const query = authToken ? `?token=${encodeURIComponent(authToken)}` : '';
+      socket = new WebSocket(`${protocol}://${location.host}/ws${query}`);
+      socket.onopen = () => {
+        retryDelay = 2000;
+        socket.send(JSON.stringify({ type: 'subscribe', tf: timeframe.value }));
+        sendPrefs();
+      };
+      socket.onmessage = ({ data }) => {
+        const message = JSON.parse(data);
+        if (message.type === 'snapshot') {
+          chartApi.setBars(message.bars);
+          levels.value = message.levels || [];
+          syncVisibleLevels();
+          price.value = message.price;
+        } else if (message.type === 'bar') {
+          chartApi.updateBar(message.bar);
+          price.value = message.bar.c;
+          status.value.last_bar_t = message.bar.t;
+        } else if (message.type === 'levels') {
+          levels.value = message.levels;
+          syncVisibleLevels();
+        } else if (message.type === 'clusters') {
+          clusters.value = message.clusters;
+          price.value = message.price;
+        } else if (message.type === 'alert') {
+          alerts.value.unshift({ at: new Date().toLocaleTimeString(), message: message.message });
+          alerts.value = alerts.value.slice(0, 20);
+          playAlert();
+        }
+      };
+      socket.onclose = async () => {
+        status.value.stream = 'disconnected';
+        // A refused upgrade reaches the browser as 1006, not 1008: the server
+        // rejects the handshake with HTTP 403 before any close frame exists.
+        // So the close code cannot distinguish "bad token" from "server
+        // restarting". Re-check over HTTP instead — apiFetch prompts for a
+        // token when that is what is actually wrong — and back off so a
+        // visitor without one is not reconnecting twice a second forever.
+        await refreshStatus();
+        retryDelay = Math.min(retryDelay * 2, 30000);
+        setTimeout(connect, retryDelay);
+      };
+    }
+
+    function playAlert() {
+      const context = new (window.AudioContext || window.webkitAudioContext)();
+      const oscillator = context.createOscillator();
+      const gain = context.createGain();
+      oscillator.frequency.value = 740;
+      gain.gain.setValueAtTime(0.12, context.currentTime);
+      gain.gain.exponentialRampToValueAtTime(0.001, context.currentTime + 0.35);
+      oscillator.connect(gain).connect(context.destination);
+      oscillator.start();
+      oscillator.stop(context.currentTime + 0.35);
+    }
+
+    function toggleDraw() {
+      drawMode.value = !drawMode.value;
+      drawPoints.value = [];
+      selectedLine.value = null;
+      chartApi.clearLinePreview();
+    }
+
+    function handleChartMove(param) {
+      if (!drawMode.value || drawPoints.value.length !== 1) return;
+      chartApi.setLinePreview(drawPoints.value[0], chartApi.pointFromClick(param, snap.value), drawColor.value, drawWidth.value);
+    }
+
+    async function handleChartClick(param) {
+      if (!drawMode.value) {
+        selectedLine.value = chartApi.hitTest(param);
+        selectedLines.value = selectedLine.value ? [selectedLine.value] : [];
+        return;
+      }
+      const point = chartApi.pointFromClick(param, snap.value);
+      if (point.snappedSide) drawSide.value = point.snappedSide;
+      drawPoints.value.push(point);
+      if (drawPoints.value.length < 2) return;
+      chartApi.clearLinePreview();
+      const [start, end] = drawPoints.value.sort((a, b) => a.t - b.t);
+      if (start.t === end.t) { drawPoints.value = []; return; }
+      const temporaryId = `tmp_${Date.now()}`;
+      const optimistic = {
+        id: temporaryId, kind: 'manual', tf: timeframe.value, side: drawSide.value,
+        weight: 1, score: 1, label: drawName.value || `${timeframe.value} ${drawSide.value}`,
+        anchor_t: start.t, anchor_p: start.p, slope: (end.p - start.p) / (end.t - start.t),
+        points: null, first_t: start.t, last_t: end.t, provisional: false, hidden: false,
+        color: drawColor.value, line_width: drawWidth.value,
+      };
+      levels.value.push(optimistic);
+      syncVisibleLevels();
+      drawPoints.value = [];
+      drawMode.value = false;
       try {
-        const res = await fetch('/api/hello');
+        const response = await apiFetch('/api/lines', {
-        if (!res.ok) throw new Error(`HTTP ${res.status}`);
+          method: 'POST', headers: { 'Content-Type': 'application/json' },
-        result.value = JSON.stringify(await res.json(), null, 2);
+          body: JSON.stringify({ tf: timeframe.value, side: drawSide.value, anchor_t: start.t, anchor_p: start.p, end_t: end.t, end_p: end.p, note: drawName.value, color: drawColor.value, line_width: drawWidth.value }),
-      } catch (e) {
+        });
-        error.value = String(e);
+        if (!response.ok) throw new Error(`HTTP ${response.status}`);
-      } finally {
+        const saved = await response.json();
-        loading.value = false;
+        levels.value = levels.value.filter(level => level.id !== temporaryId);
+        if (!levels.value.some(level => level.id === saved.id)) levels.value.push(saved);
+        selectedLine.value = saved.id;
+        selectedLines.value = [saved.id];
+      } catch (error) {
+        levels.value = levels.value.filter(level => level.id !== temporaryId);
+        console.error('Unable to save line', error);
+      }
+      syncVisibleLevels();
+    }
+
+    async function deleteSelected() {
+      const ids = selectedLines.value.length ? selectedLines.value : [selectedLine.value].filter(Boolean);
+      await deleteLines(ids);
+    }
+
+    async function deleteLine(id) {
+      await deleteLines([id]);
+    }
+
+    async function deleteLines(ids) {
+      if (!ids.length) return;
+      const deleting = new Set(ids);
+      levels.value = levels.value.filter(level => !deleting.has(level.id));
+      if (selectedLine.value && deleting.has(selectedLine.value)) selectedLine.value = null;
+      selectedLines.value = selectedLines.value.filter(id => !deleting.has(id));
+      syncVisibleLevels();
+      const responses = [];
+      for (const id of ids) {
+        responses.push(await apiFetch(`/api/lines/${encodeURIComponent(id)}`, { method: 'DELETE' }));
+      }
+      responses.forEach(response => {
+        if (!response.ok) console.error(`Unable to delete line: HTTP ${response.status}`);
+      });
+    }
+
+    function selectLine(id) {
+      selectedLine.value = id;
+      selectedLines.value = [id];
+    }
+
+    function toggleLineSelection(id) {
+      selectedLines.value = selectedLines.value.includes(id)
+        ? selectedLines.value.filter(value => value !== id)
+        : [...selectedLines.value, id];
+      selectedLine.value = selectedLines.value.length === 1 ? selectedLines.value[0] : null;
+    }
+
+    function toggleSelectAll() {
+      selectedLines.value = allManualSelected.value ? [] : manualLines.value.map(line => line.id);
+      selectedLine.value = selectedLines.value.length === 1 ? selectedLines.value[0] : null;
+    }
+
+    async function deleteSelectedLines() {
+      await deleteLines([...selectedLines.value]);
+    }
+
+    async function renameLine(line, name) {
+      await updateLineStyle(line, { note: name.trim() });
+    }
+
+    async function updateLineStyle(line, changes) {
+      const response = await apiFetch(`/api/lines/${encodeURIComponent(line.id)}`, {
+        method: 'PATCH', headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(changes),
+      });
+      if (!response.ok) { console.error(`Unable to update line: HTTP ${response.status}`); return; }
+      const saved = await response.json();
+      levels.value = levels.value.map(level => level.id === line.id ? saved : level);
+      syncVisibleLevels();
+    }
+
+    async function updateLineGeometry(line) {
+      const response = await apiFetch(`/api/lines/${encodeURIComponent(line.id)}`, {
+        method: 'PATCH', headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          anchor_t: line.anchor_t, anchor_p: line.anchor_p,
+          slope: line.slope, last_t: line.last_t,
+        }),
+      });
+      if (!response.ok) { console.error(`Unable to move line: HTTP ${response.status}`); return; }
+      const saved = await response.json();
+      levels.value = levels.value.map(level => level.id === line.id ? saved : level);
+      syncVisibleLevels();
+    }
+
+    async function endLineHere(line) {
+      const response = await apiFetch(`/api/lines/${encodeURIComponent(line.id)}`, {
+        method: 'PATCH', headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ cutoff_t: line.cutoff_t }),
+      });
+      if (!response.ok) { console.error(`Unable to end line: HTTP ${response.status}`); return; }
+      const saved = await response.json();
+      levels.value = levels.value.map(level => level.id === line.id ? saved : level);
+      syncVisibleLevels();
+    }
+
+    function handleKeydown(event) {
+      if ((event.key === 'Delete' || event.key === 'Backspace') && selectedLine.value) {
+        event.preventDefault();
+        deleteSelected();
       }
     }
 
-    return { result, error, loading, ping };
+    function selectTimeframe(tf) {
+      timeframe.value = tf;
+      prefs.value.base_tf = tf;
+      if (socket?.readyState === WebSocket.OPEN) {
+        socket.send(JSON.stringify({ type: 'subscribe', tf }));
+      }
+    }
+
+    function enabled(level) {
+      if (level.kind === 'ma') return (prefs.value.enabled.ma[level.tf] || []).includes(level.period);
+      if (level.kind === 'manual') return prefs.value.enabled.manual;
+      return prefs.value.enabled.auto;
+    }
+
+    function syncVisibleLevels() {
+      if (chartApi) chartApi.syncLevels(levels.value.filter(enabled));
+    }
+
+    function sendPrefs() {
+      if (socket?.readyState === WebSocket.OPEN) {
+        socket.send(JSON.stringify({ type: 'prefs', ...prefs.value }));
+      }
+    }
+
+    function allEnabled(tf) {
+      const available = tf === '1d' ? [10, 20, 50, 100, 200] : [9, 21];
+      return available.every(period => (prefs.value.enabled.ma[tf] || []).includes(period));
+    }
+
+    function toggleGroup(tf, checked) {
+      prefs.value.enabled.ma[tf] = checked ? (tf === '1d' ? [10, 20, 50, 100, 200] : [9, 21]) : [];
+    }
+
+    watch(prefs, () => {
+      localStorage.setItem('chart-layer-prefs', JSON.stringify(prefs.value));
+      syncVisibleLevels();
+      sendPrefs();
+    }, { deep: true });
+
+    watch(selectedLine, id => {
+      if (chartApi) chartApi.setSelectedLine(id);
+    });
+
+    onMounted(() => {
+      chartApi = new ConfluenceChart();
+      chartApi.create(document.getElementById('chart'));
+      chartApi.setClickHandler(handleChartClick);
+      chartApi.setMoveHandler(handleChartMove);
+      chartApi.setLineChangeHandler(updateLineGeometry);
+      chartApi.setLineEndHandler(endLineHere);
+      window.addEventListener('keydown', handleKeydown);
+      refreshStatus();
+      connect();
+      timer = setInterval(() => { now.value = Date.now(); refreshStatus(); }, 5000);
+    });
+    onUnmounted(() => {
+      clearInterval(timer);
+      if (socket) socket.close();
+      if (chartApi) chartApi.destroy();
+      window.removeEventListener('keydown', handleKeydown);
+    });
+
+    return { status, price, barAge, timeframe, timeframes, prefs, clusters, alerts, drawMode, drawName, drawColor, drawWidth, drawSide, snap, drawPoints, selectedLine, selectedLines, manualLines, hasLineSelection, allManualSelected, selectTimeframe, allEnabled, toggleGroup, toggleDraw, deleteSelected, deleteLine, selectLine, toggleLineSelection, toggleSelectAll, deleteSelectedLines, renameLine, updateLineStyle };
   },
 }).mount('#app');

static/chart.js

@@ -0,0 +1,400 @@
+class ConfluenceChart {
+  constructor() {
+    this.chart = null;
+    this.candles = null;
+    this.resizeObserver = null;
+    this.levelSeries = new Map();
+    this.previewLine = null;
+    this.bars = [];
+    this.levels = [];
+    this.onChartClick = null;
+    this.onChartMove = null;
+    this.tooltip = null;
+    this.chartEl = null;
+    this.clickListener = null;
+    this.selectedLineId = null;
+    this.anchorHandles = [];
+    this.draggingAnchor = null;
+    this.onLineChange = null;
+    this.anchorMoveListener = null;
+    this.anchorUpListener = null;
+    this.contextMenu = null;
+    this.contextCutoff = null;
+    this.contextListener = null;
+    this.onLineEnd = null;
+  }
+
+  create(el) {
+    this.chartEl = el;
+    this.chart = LightweightCharts.createChart(el, {
+      autoSize: true,
+      layout: {
+        background: { color: getComputedStyle(document.documentElement).getPropertyValue('--chart-bg').trim() },
+        textColor: getComputedStyle(document.documentElement).getPropertyValue('--muted').trim(),
+      },
+      grid: {
+        vertLines: { color: 'rgba(128,128,128,.10)' },
+        horzLines: { color: 'rgba(128,128,128,.10)' },
+      },
+      timeScale: { timeVisible: true, secondsVisible: false },
+      rightPriceScale: { borderVisible: false },
+    });
+    this.candles = this.chart.addSeries(LightweightCharts.CandlestickSeries, {
+      upColor: '#27825c', downColor: '#bd4545', borderVisible: true,
+      borderUpColor: '#1d6849', borderDownColor: '#963737',
+      wickUpColor: '#1d6849', wickDownColor: '#963737',
+    });
+    this.resizeObserver = new ResizeObserver(() => {
+      this.chart.applyOptions({ width: el.clientWidth, height: el.clientHeight });
+      requestAnimationFrame(() => this.renderAnchorHandles());
+    });
+    this.resizeObserver.observe(el);
+    this.tooltip = document.createElement('div');
+    this.tooltip.className = 'chart-tooltip';
+    el.appendChild(this.tooltip);
+    const preview = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
+    preview.classList.add('chart-preview');
+    preview.setAttribute('aria-hidden', 'true');
+    this.previewLine = document.createElementNS('http://www.w3.org/2000/svg', 'line');
+    this.previewLine.setAttribute('hidden', '');
+    preview.appendChild(this.previewLine);
+    el.appendChild(preview);
+    const handles = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
+    handles.classList.add('chart-handles');
+    handles.setAttribute('aria-hidden', 'true');
+    for (const anchor of ['start', 'end']) {
+      const handle = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
+      handle.classList.add('chart-anchor');
+      handle.dataset.anchor = anchor;
+      handle.setAttribute('r', '6');
+      handle.setAttribute('hidden', '');
+      handle.addEventListener('pointerdown', event => this.startAnchorDrag(event, anchor));
+      handle.addEventListener('click', event => event.stopPropagation());
+      handles.appendChild(handle);
+      this.anchorHandles.push(handle);
+    }
+    el.appendChild(handles);
+    this.contextMenu = document.createElement('div');
+    this.contextMenu.className = 'chart-context-menu';
+    this.contextMenu.hidden = true;
+    const endHere = document.createElement('button');
+    endHere.type = 'button';
+    endHere.textContent = 'End trendline here';
+    endHere.addEventListener('click', event => {
+      event.stopPropagation();
+      this.endSelectedLineHere();
+    });
+    this.contextMenu.addEventListener('click', event => event.stopPropagation());
+    this.contextMenu.appendChild(endHere);
+    el.appendChild(this.contextMenu);
+    this.anchorMoveListener = event => this.moveAnchor(event);
+    this.anchorUpListener = event => this.finishAnchorDrag(event);
+    window.addEventListener('pointermove', this.anchorMoveListener);
+    window.addEventListener('pointerup', this.anchorUpListener);
+    this.contextListener = event => this.showContextMenu(event);
+    el.addEventListener('contextmenu', this.contextListener);
+    this.clickListener = event => {
+      this.hideContextMenu();
+      if (!this.onChartClick) return;
+      const bounds = el.getBoundingClientRect();
+      const point = { x: event.clientX - bounds.left, y: event.clientY - bounds.top };
+      const time = this.chart.timeScale().coordinateToTime(point.x);
+      if (time != null) this.onChartClick({ point, time });
+    };
+    el.addEventListener('click', this.clickListener);
+    this.chart.subscribeCrosshairMove(param => {
+      if (!param.point || !param.time) {
+        this.tooltip.hidden = true;
+        return;
+      }
+      this.updateLineTooltip(param);
+      if (this.onChartMove) this.onChartMove(param);
+    });
+    this.chart.timeScale().subscribeVisibleLogicalRangeChange(() => this.renderAnchorHandles());
+  }
+
+  setBars(bars) {
+    this.bars = bars;
+    this.candles.setData(bars.map(this.toCandle));
+    this.chart.timeScale().setVisibleLogicalRange({
+      from: Math.max(0, bars.length - 160),
+      to: bars.length + 5,
+    });
+    requestAnimationFrame(() => this.renderAnchorHandles());
+  }
+
+  updateBar(bar) {
+    this.candles.update(this.toCandle(bar));
+    if (this.bars.length && this.bars[this.bars.length - 1].t === bar.t) this.bars[this.bars.length - 1] = bar;
+    else this.bars.push(bar);
+    this.renderAnchorHandles();
+  }
+
+  syncLevels(levels) {
+    this.levels = levels;
+    const wanted = new Set(levels.filter(level => !level.hidden).map(level => level.id));
+    for (const [id, entry] of this.levelSeries) {
+      if (!wanted.has(id)) {
+        this.chart.removeSeries(entry.series);
+        this.levelSeries.delete(id);
+      }
+    }
+    for (const level of levels) {
+      if (level.hidden) continue;
+      let entry = this.levelSeries.get(level.id);
+      const isMa = level.kind === 'ma';
+      const options = {
+        color: level.color || ConfluenceChart.tfColors[level.tf],
+        lineWidth: level.line_width || (level.tf === '1d' ? 2 : 1),
+        lineType: isMa ? LightweightCharts.LineType.WithSteps : LightweightCharts.LineType.Simple,
+        lineStyle: level.provisional ? LightweightCharts.LineStyle.Dashed : LightweightCharts.LineStyle.Solid,
+        priceLineVisible: false,
+        lastValueVisible: level.cutoff_t == null,
+        title: level.label,
+        // Overlays outside the visible price range must not flatten the candles.
+        autoscaleInfoProvider: () => null,
+      };
+      if (!entry) {
+        entry = { series: this.chart.addSeries(LightweightCharts.LineSeries, options) };
+        this.levelSeries.set(level.id, entry);
+      } else {
+        entry.series.applyOptions(options);
+      }
+      let data;
+      if (isMa) {
+        data = (level.points || []).map(([time, value]) => ({ time, value }));
+        const latestTime = this.bars[this.bars.length - 1]?.t;
+        const latestValue = data[data.length - 1]?.value;
+        if (latestTime != null && latestValue != null && latestTime > data[data.length - 1].time) {
+          data.push({ time: latestTime, value: latestValue });
+        }
+      } else {
+        data = this.lineData(level);
+      }
+      entry.series.setData(data);
+    }
+    this.renderAnchorHandles();
+  }
+
+  setClickHandler(handler) { this.onChartClick = handler; }
+
+  setMoveHandler(handler) { this.onChartMove = handler; }
+
+  setLineChangeHandler(handler) { this.onLineChange = handler; }
+
+  setLineEndHandler(handler) { this.onLineEnd = handler; }
+
+  setSelectedLine(id) {
+    this.selectedLineId = id;
+    this.hideContextMenu();
+    this.renderAnchorHandles();
+  }
+
+  setLinePreview(start, end, color, lineWidth) {
+    if (start.t === end.t) return;
+    const x1 = this.chart.timeScale().timeToCoordinate(start.t);
+    const x2 = this.chart.timeScale().timeToCoordinate(end.t);
+    const y1 = this.candles.priceToCoordinate(start.p);
+    const y2 = this.candles.priceToCoordinate(end.p);
+    if ([x1, x2, y1, y2].some(value => value == null)) return;
+    this.previewLine.removeAttribute('hidden');
+    this.previewLine.setAttribute('x1', x1);
+    this.previewLine.setAttribute('y1', y1);
+    this.previewLine.setAttribute('x2', x2);
+    this.previewLine.setAttribute('y2', y2);
+    this.previewLine.setAttribute('stroke', color);
+    this.previewLine.setAttribute('stroke-width', lineWidth);
+    this.previewLine.setAttribute('stroke-dasharray', '6 4');
+  }
+
+  clearLinePreview() {
+    if (this.previewLine) this.previewLine.setAttribute('hidden', '');
+  }
+
+  updateLineTooltip(param) {
+    const id = this.hitTest(param);
+    const line = this.levels.find(level => level.id === id);
+    this.tooltip.hidden = !line;
+    if (!line) return;
+    this.tooltip.textContent = `#${line.number} ${line.label}`;
+    this.tooltip.style.left = `${param.point.x + 12}px`;
+    this.tooltip.style.top = `${Math.max(8, param.point.y - 30)}px`;
+  }
+
+  pointFromClick(param, snap) {
+    const rawPrice = this.candles.coordinateToPrice(param.point.y);
+    let point = { t: Number(param.time), p: rawPrice, snappedSide: null };
+    if (!snap || !this.bars.length) return point;
+    const nearest = this.bars.reduce((best, bar) => Math.abs(bar.t - point.t) < Math.abs(best.t - point.t) ? bar : best);
+    const candidates = [
+      { p: nearest.h, side: 'resistance' },
+      { p: nearest.l, side: 'support' },
+    ];
+    const snapped = candidates
+      .map(value => ({ ...value, distance: Math.abs(this.candles.priceToCoordinate(value.p) - param.point.y) }))
+      .sort((a, b) => a.distance - b.distance)[0];
+    if (snapped.distance <= 8) point = { t: nearest.t, p: snapped.p, snappedSide: snapped.side };
+    return point;
+  }
+
+  hitTest(param) {
+    let best = null;
+    for (const level of this.levels.filter(value => value.kind === 'manual')) {
+      const points = this.lineData(level).map(point => ({
+        x: this.chart.timeScale().timeToCoordinate(point.time),
+        y: this.candles.priceToCoordinate(point.value),
+      }));
+      for (let index = 1; index < points.length; index += 1) {
+        const [start, end] = [points[index - 1], points[index]];
+        if ([start.x, start.y, end.x, end.y].some(value => value == null) || start.x === end.x) continue;
+        if (param.point.x < Math.min(start.x, end.x) - 6 || param.point.x > Math.max(start.x, end.x) + 6) continue;
+        const lineY = start.y + (end.y - start.y) * (param.point.x - start.x) / (end.x - start.x);
+        const distance = Math.abs(lineY - param.point.y);
+        if (distance <= 6 && (!best || distance < best.distance)) best = { id: level.id, distance };
+      }
+    }
+    return best?.id || null;
+  }
+
+  lineData(level) {
+    const secondPrice = level.anchor_p + level.slope * (level.last_t - level.anchor_t);
+    const points = [
+      { time: level.anchor_t, value: level.anchor_p },
+      { time: level.last_t, value: secondPrice },
+    ];
+    const anchorIndex = this.bars.findIndex(bar => bar.t >= level.anchor_t);
+    const secondIndex = this.bars.findIndex(bar => bar.t >= level.last_t);
+    const cutoffIndex = level.cutoff_t == null
+      ? -1
+      : this.bars.findIndex(bar => bar.t >= level.cutoff_t);
+    const targetIndex = cutoffIndex >= 0 ? cutoffIndex : this.bars.length - 1;
+    if (anchorIndex >= 0 && secondIndex > anchorIndex && targetIndex > secondIndex) {
+      const value = level.anchor_p
+        + (secondPrice - level.anchor_p) * (targetIndex - anchorIndex) / (secondIndex - anchorIndex);
+      points.push({ time: this.bars[targetIndex].t, value });
+    }
+    return points.filter((point, index) => index === 0 || point.time !== points[index - 1].time);
+  }
+
+  renderAnchorHandles() {
+    const level = this.levels.find(value => value.id === this.selectedLineId && value.kind === 'manual');
+    if (!level || !this.anchorHandles.length) {
+      this.anchorHandles.forEach(handle => handle.setAttribute('hidden', ''));
+      return;
+    }
+    const points = this.lineData(level).slice(0, 2);
+    points.forEach((point, index) => {
+      const x = this.chart.timeScale().timeToCoordinate(point.time);
+      const y = this.candles.priceToCoordinate(point.value);
+      const handle = this.anchorHandles[index];
+      if (x == null || y == null) {
+        handle.setAttribute('hidden', '');
+        return;
+      }
+      handle.removeAttribute('hidden');
+      handle.setAttribute('cx', x);
+      handle.setAttribute('cy', y);
+      handle.setAttribute('fill', level.color || ConfluenceChart.tfColors[level.tf]);
+    });
+  }
+
+  startAnchorDrag(event, anchor) {
+    event.preventDefault();
+    event.stopPropagation();
+    this.draggingAnchor = { id: this.selectedLineId, anchor };
+  }
+
+  moveAnchor(event) {
+    if (!this.draggingAnchor || !this.chartEl) return;
+    const level = this.levels.find(value => value.id === this.draggingAnchor.id);
+    if (!level || !this.bars.length) return;
+    const bounds = this.chartEl.getBoundingClientRect();
+    const x = Math.max(0, Math.min(bounds.width, event.clientX - bounds.left));
+    const y = Math.max(0, Math.min(bounds.height, event.clientY - bounds.top));
+    const rawTime = this.chart.timeScale().coordinateToTime(x);
+    const price = this.candles.coordinateToPrice(y);
+    if (rawTime == null || price == null) return;
+    const time = this.bars.reduce((nearest, bar) =>
+      Math.abs(bar.t - Number(rawTime)) < Math.abs(nearest.t - Number(rawTime)) ? bar : nearest
+    ).t;
+    const secondPrice = level.anchor_p + level.slope * (level.last_t - level.anchor_t);
+    if (this.draggingAnchor.anchor === 'start') {
+      if (time >= level.last_t) return;
+      level.anchor_t = time;
+      level.anchor_p = price;
+      level.slope = (secondPrice - price) / (level.last_t - time);
+    } else {
+      if (time <= level.anchor_t) return;
+      if (level.cutoff_t != null && time >= level.cutoff_t) return;
+      level.last_t = time;
+      level.slope = (price - level.anchor_p) / (time - level.anchor_t);
+    }
+    const entry = this.levelSeries.get(level.id);
+    if (entry) entry.series.setData(this.lineData(level));
+    this.renderAnchorHandles();
+  }
+
+  finishAnchorDrag(event) {
+    if (!this.draggingAnchor) return;
+    event.preventDefault();
+    const level = this.levels.find(value => value.id === this.draggingAnchor.id);
+    this.draggingAnchor = null;
+    if (level && this.onLineChange) this.onLineChange({ ...level });
+  }
+
+  showContextMenu(event) {
+    const level = this.levels.find(value => value.id === this.selectedLineId && value.kind === 'manual');
+    if (!level || !this.bars.length) return;
+    event.preventDefault();
+    const bounds = this.chartEl.getBoundingClientRect();
+    const x = event.clientX - bounds.left;
+    const rawTime = this.chart.timeScale().coordinateToTime(x);
+    if (rawTime == null) return;
+    const cutoff = this.bars.reduce((nearest, bar) =>
+      Math.abs(bar.t - Number(rawTime)) < Math.abs(nearest.t - Number(rawTime)) ? bar : nearest
+    ).t;
+    if (cutoff <= level.last_t) {
+      this.hideContextMenu();
+      return;
+    }
+    this.contextCutoff = cutoff;
+    this.contextMenu.hidden = false;
+    this.contextMenu.style.left = `${Math.min(x, bounds.width - 170)}px`;
+    this.contextMenu.style.top = `${Math.min(event.clientY - bounds.top, bounds.height - 40)}px`;
+  }
+
+  hideContextMenu() {
+    if (this.contextMenu) this.contextMenu.hidden = true;
+    this.contextCutoff = null;
+  }
+
+  endSelectedLineHere() {
+    const level = this.levels.find(value => value.id === this.selectedLineId);
+    if (!level || this.contextCutoff == null) return;
+    level.cutoff_t = this.contextCutoff;
+    const entry = this.levelSeries.get(level.id);
+    if (entry) entry.series.setData(this.lineData(level));
+    this.hideContextMenu();
+    if (this.onLineEnd) this.onLineEnd({ ...level });
+  }
+
+  toCandle(bar) {
+    return { time: bar.t, open: bar.o, high: bar.h, low: bar.l, close: bar.c };
+  }
+
+  destroy() {
+    if (this.resizeObserver) this.resizeObserver.disconnect();
+    if (this.chartEl && this.clickListener) this.chartEl.removeEventListener('click', this.clickListener);
+    if (this.chartEl && this.contextListener) this.chartEl.removeEventListener('contextmenu', this.contextListener);
+    if (this.anchorMoveListener) window.removeEventListener('pointermove', this.anchorMoveListener);
+    if (this.anchorUpListener) window.removeEventListener('pointerup', this.anchorUpListener);
+    if (this.chart) this.chart.remove();
+  }
+}
+
+ConfluenceChart.tfColors = {
+  '1m':'#82909f', '2m':'#8a92df', '5m':'#65b7cf', '15m':'#45c39b',
+  '30m':'#a8c85d', '1h':'#efb643', '4h':'#ec7b42', '1d':'#d96073',
+};
+
+window.ConfluenceChart = ConfluenceChart;

static/index.html

@@ -3,24 +3,90 @@
 <head>
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>chart</title>
+  <title>/ES Confluence</title>
   <link rel="stylesheet" href="/static/style.css">
   <script src="https://unpkg.com/vue@3/dist/vue.global.prod.js"></script>
+  <script src="https://unpkg.com/lightweight-charts@5.2.0/dist/lightweight-charts.standalone.production.js"></script>
 </head>
 <body>
   <div id="app">
-    <h1>chart</h1>
+    <header>
-    <p class="sub">FastAPI + Vue 3 &mdash; placeholder</p>
+      <div><span class="eyebrow">CME FUTURES</span><h1>/ES <strong>CONFLUENCE</strong></h1></div>
-
+      <div class="status" :class="status.stream"><i></i>{{ status.stream }}<span v-if="status.delay_minutes"> ({{ status.delay_minutes }}min delay)</span> · {{ status.source || 'source' }}</div>
-    <div class="card">
+    </header>
-      <button @click="ping" :disabled="loading">
+    <main>
-        {{ loading ? 'calling…' : 'call /api/hello' }}
+      <section class="chart-shell">
-      </button>
+        <div class="chart-head">
-      <pre v-if="result">{{ result }}</pre>
+          <div><span class="symbol">{{ status.symbol || 'ES=F' }}</span><span class="price">{{ price == null ? '—' : price.toFixed(2) }}</span></div>
-      <p v-if="error" class="error">{{ error }}</p>
+          <div class="timeframes"><button v-for="tf in timeframes" :key="tf" :class="{active: timeframe === tf}" @click="selectTimeframe(tf)">{{ tf }}</button></div>
-    </div>
+        </div>
+        <div class="drawing-tools">
+          <button :class="{active: drawMode}" @click="toggleDraw">Trendline</button>
+          <input class="line-name" v-model.trim="drawName" placeholder="Line name" aria-label="Trendline name">
+          <input type="color" v-model="drawColor" aria-label="New trendline color">
+          <select v-model.number="drawWidth" aria-label="New trendline width"><option v-for="width in [1,2,3,4]" :value="width">{{ width }}px</option></select>
+          <select v-model="drawSide" aria-label="Line side"><option value="support">Support</option><option value="resistance">Resistance</option></select>
+          <label><input type="checkbox" v-model="snap">Snap</label>
+          <button @click="deleteSelected" :disabled="!hasLineSelection">Delete</button>
+          <span v-if="drawMode">{{ drawPoints.length ? 'Place second point' : 'Place first point' }}</span>
+          <span v-else-if="selectedLine">Line selected</span>
+        </div>
+        <div id="chart"></div>
+        <div class="statusbar">
+          <span>FEED <b>{{ status.stream }}</b></span>
+          <span>LAST BAR <b>{{ barAge }}</b></span>
+          <span>HELD <b>{{ status.bars_held?.[timeframe] || 0 }} {{ timeframe }}</b></span>
+        </div>
+      </section>
+      <aside>
+        <h2>Layers</h2>
+        <div class="layer-group">
+          <label class="master"><input type="checkbox" :checked="allEnabled('1d')" @change="toggleGroup('1d', $event.target.checked)"><span class="swatch tf-1d"></span>Daily MAs</label>
+          <div class="periods"><label v-for="period in [10,20,50,100,200]" :key="period"><input type="checkbox" :value="period" v-model="prefs.enabled.ma['1d']">{{ period }}</label></div>
+        </div>
+        <div class="layer-group optional">
+          <label><input type="checkbox" :checked="allEnabled('1h')" @change="toggleGroup('1h', $event.target.checked)"><span class="swatch tf-1h"></span>1h MAs</label>
+        </div>
+        <div class="layer-group">
+          <label><input type="checkbox" v-model="prefs.enabled.manual"><span class="swatch manual"></span>Manual lines</label>
+          <label class="disabled"><input type="checkbox" disabled>Auto trendlines</label>
+        </div>
+        <label class="score-hidden"><input type="checkbox" v-model="prefs.hidden_levels_score">Hidden levels still count toward confluence</label>
+        <details class="sidebar-section" open>
+          <summary>Trendlines ({{ manualLines.length }})</summary>
+          <div class="trendline-actions" v-if="manualLines.length">
+            <button @click="toggleSelectAll">{{ allManualSelected ? 'Clear' : 'Select all' }}</button>
+            <button @click="deleteSelectedLines" :disabled="!selectedLines.length">Delete selected ({{ selectedLines.length }})</button>
+          </div>
+          <div v-if="!manualLines.length" class="empty">No manual trendlines.</div>
+          <div v-for="line in manualLines" :key="line.id" class="trendline-row" :class="{selected: selectedLines.includes(line.id)}" @click="toggleLineSelection(line.id)">
+            <input class="line-select" type="checkbox" :checked="selectedLines.includes(line.id)" :aria-label="`Select trendline ${line.number}`" @click.stop @change="toggleLineSelection(line.id)">
+            <input :value="line.label" aria-label="Trendline name" @click.stop @change="renameLine(line, $event.target.value)">
+            <span>#{{ line.number }} · {{ line.tf }} · {{ line.side }}</span>
+            <button @click.stop="deleteLine(line.id)" aria-label="Delete trendline">Delete</button>
+            <div class="line-style-controls" @click.stop>
+              <input type="color" :value="line.color || '#65b7cf'" aria-label="Trendline color" @change="updateLineStyle(line, { color: $event.target.value })">
+              <select :value="line.line_width || 2" aria-label="Trendline width" @change="updateLineStyle(line, { line_width: Number($event.target.value) })"><option v-for="width in [1,2,3,4]" :value="width">{{ width }}px</option></select>
+            </div>
+          </div>
+        </details>
+        <details class="sidebar-section">
+          <summary>Confluence zones</summary>
+          <div v-if="!clusters.length" class="empty">No active zones near current structure.</div>
+          <div v-for="cluster in clusters" :key="cluster.id" class="cluster" :class="cluster.side">
+            <div class="cluster-top"><b>{{ cluster.side }}</b><strong>{{ cluster.score.toFixed(1) }}</strong></div>
+            <div class="zone">{{ cluster.low.toFixed(2) }} – {{ cluster.high.toFixed(2) }}</div>
+            <div class="members">{{ cluster.members.map(member => member.label).join(' · ') }}</div>
+            <div class="distance">{{ cluster.distance > 0 ? '+' : '' }}{{ cluster.distance.toFixed(2) }} pts</div>
+          </div>
+        </details>
+        <h2>Alert log</h2>
+        <div v-if="!alerts.length" class="empty">No alerts fired.</div>
+        <div v-for="alert in alerts" :key="alert.at" class="alert-entry"><time>{{ alert.at }}</time>{{ alert.message }}</div>
+      </aside>
+    </main>
   </div>
-
+  <script src="/static/chart.js"></script>
   <script src="/static/app.js"></script>
 </body>
 </html>

static/style.css

@@ -1,62 +1,24 @@
-:root {
+:root { color-scheme:light; --bg:#e8dfcf; --panel:#f7f1e6; --chart-bg:#fbf7ef; --fg:#2c2924; --muted:#746c60; --line:#d2c5b2; --accent:#b7771d; --green:#27825c; --red:#bd4545; }
-  color-scheme: light dark;
+* { box-sizing:border-box; }
-  --bg: #ffffff;
+body { margin:0; background:var(--bg); color:var(--fg); font:14px/1.45 "IBM Plex Mono", "SFMono-Regular", Consolas, monospace; }
-  --fg: #16181d;
+#app { min-height:100vh; padding:18px; }
-  --muted: #6b7280;
+header { height:64px; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid var(--line); margin-bottom:16px; }
-  --line: #e4e6eb;
+h1 { margin:0; font-size:22px; letter-spacing:-1px; } h1 strong { color:var(--accent); font-weight:600; }
-  --accent: #2f6feb;
+.eyebrow { color:var(--muted); font-size:9px; letter-spacing:2px; }
-}
+.status { text-transform:uppercase; color:var(--muted); font-size:11px; }.status i { display:inline-block; width:7px; height:7px; border-radius:50%; background:var(--red); margin-right:8px; }.status.connected i,.status.replay i { background:var(--green); box-shadow:0 0 9px var(--green); }
-
+main { display:grid; grid-template-columns:minmax(0, 1fr) 300px; gap:16px; }
-@media (prefers-color-scheme: dark) {
+.chart-shell,aside { background:var(--panel); border:1px solid var(--line); }
-  :root {
+.chart-head { min-height:56px; padding:10px 14px; display:flex; align-items:center; justify-content:space-between; gap:12px; border-bottom:1px solid var(--line); }
-    --bg: #14161a;
+.symbol { font-weight:700; margin-right:14px; }.price { color:var(--accent); font-size:19px; }
-    --fg: #e8eaed;
+button { border:1px solid var(--line); background:transparent; color:var(--muted); padding:6px 11px; font:inherit; cursor:pointer; }button.active { color:var(--bg); background:var(--accent); border-color:var(--accent); }
-    --muted: #9aa1ab;
+.timeframes { display:flex; flex-wrap:wrap; justify-content:flex-end; }.timeframes button+button { border-left:0; }
-    --line: #2a2e35;
+.drawing-tools { min-height:38px; padding:5px 12px; display:flex; align-items:center; gap:9px; border-bottom:1px solid var(--line); color:var(--muted); font-size:10px; }.drawing-tools button,.drawing-tools select,.drawing-tools .line-name { padding:4px 8px; font-size:10px; }.drawing-tools select,.drawing-tools .line-name { background:var(--panel); color:var(--fg); border:1px solid var(--line); }.drawing-tools .line-name { width:130px; font:inherit; }.drawing-tools label { display:flex; gap:4px; align-items:center; }.drawing-tools input { accent-color:var(--accent); }
-    --accent: #6d9bf5;
+#chart { position:relative; height:calc(100vh - 190px); min-height:420px; }.chart-preview,.chart-handles { position:absolute; inset:0; width:100%; height:100%; overflow:hidden; pointer-events:none; }.chart-preview { z-index:4; }.chart-handles { z-index:6; }.chart-preview line[hidden],.chart-anchor[hidden] { display:none; }.chart-anchor { stroke:var(--panel); stroke-width:2px; cursor:grab; pointer-events:all; touch-action:none; }.chart-anchor:active { cursor:grabbing; }.chart-tooltip { position:absolute; z-index:5; padding:4px 7px; border:1px solid var(--line); background:var(--panel); color:var(--fg); font-size:10px; pointer-events:none; }.chart-tooltip[hidden] { display:none; }
-  }
+.chart-context-menu { position:absolute; z-index:8; width:165px; padding:4px; border:1px solid var(--line); background:var(--panel); box-shadow:0 5px 18px color-mix(in srgb,var(--fg) 15%,transparent); }.chart-context-menu[hidden] { display:none; }.chart-context-menu button { width:100%; padding:6px 8px; text-align:left; color:var(--fg); font-size:10px; }
-}
+.statusbar { min-height:34px; display:flex; align-items:center; gap:24px; padding:6px 13px; border-top:1px solid var(--line); color:var(--muted); font-size:10px; }.statusbar b { color:var(--fg); text-transform:uppercase; }
-
+aside { padding:16px; }h2 { margin:0 0 12px; color:var(--muted); font-size:11px; text-transform:uppercase; letter-spacing:1.3px; }h2:not(:first-child) { margin-top:30px; }.empty { border-left:2px solid var(--line); padding:10px 12px; color:var(--muted); font-size:11px; }
-* { box-sizing: border-box; }
+.sidebar-section { margin-top:30px; }.sidebar-section summary { margin-bottom:12px; color:var(--muted); font-size:11px; text-transform:uppercase; letter-spacing:1.3px; cursor:pointer; user-select:none; }.sidebar-section:not([open]) summary { margin-bottom:0; }
-
+.trendline-actions { display:flex; gap:5px; margin-bottom:7px; }.trendline-actions button { flex:1; padding:4px; font-size:9px; }.trendline-row { display:grid; grid-template-columns:auto minmax(0,1fr) auto; gap:5px 8px; padding:7px; border:1px solid transparent; }.trendline-row.selected { border-color:var(--accent); }.trendline-row>.line-select { align-self:center; accent-color:var(--accent); }.trendline-row>input:not(.line-select) { min-width:0; border:0; border-bottom:1px solid var(--line); background:transparent; color:var(--fg); font:inherit; font-size:11px; }.trendline-row span { grid-column:2; color:var(--muted); font-size:9px; text-transform:uppercase; }.trendline-row button { grid-column:3; grid-row:1; padding:3px 6px; font-size:9px; }.line-style-controls { grid-column:3; display:flex; align-items:center; gap:4px; }.line-style-controls input { width:24px; height:20px; padding:0; border:0; background:transparent; }.line-style-controls select { border:1px solid var(--line); background:var(--panel); color:var(--fg); font-size:9px; }
-body {
+.layer-group { padding:9px 0; border-bottom:1px solid var(--line); display:grid; gap:7px; }.layer-group label,.score-hidden { display:flex; align-items:center; gap:7px; font-size:11px; cursor:pointer; }.layer-group input,.score-hidden input { accent-color:var(--accent); }.periods { display:flex; flex-wrap:wrap; gap:10px; padding-left:22px; }.periods label { color:var(--muted); }.swatch { width:13px; height:3px; display:inline-block; background:var(--muted); }.tf-1d { background:#d96073; }.tf-4h { background:#ec7b42; }.tf-1h { background:#efb643; }.manual { background:#65b7cf; }.optional { color:var(--muted); }.disabled { opacity:.45; }.score-hidden { margin-top:11px; color:var(--muted); line-height:1.25; }
-  margin: 0;
+.cluster { margin:8px 0; padding:10px; border:1px solid var(--line); border-left:3px solid var(--green); background:var(--chart-bg); }.cluster.resistance { border-left-color:var(--red); }.cluster-top { display:flex; justify-content:space-between; text-transform:uppercase; font-size:10px; }.cluster-top strong { color:var(--accent); font-size:16px; }.zone { margin:4px 0; font-size:15px; }.members,.distance { color:var(--muted); font-size:9px; }.distance { margin-top:5px; }.alert-entry { white-space:pre-line; margin:8px 0; padding:9px; background:color-mix(in srgb,var(--accent) 8%,transparent); font-size:10px; }.alert-entry time { display:block; color:var(--accent); margin-bottom:4px; }
-  padding: 3rem 1.5rem;
+@media (max-width:850px) { #app { padding:10px; }.chart-shell { min-width:0; }main { grid-template-columns:1fr; }.drawing-tools { flex-wrap:wrap; }.drawing-tools .line-name { width:110px; }#chart { height:55vh; min-height:360px; }aside { min-height:180px; }header { height:54px; }.chart-head { align-items:flex-start; flex-direction:column; }.timeframes { justify-content:flex-start; }.timeframes button { padding:5px 8px; } }
-  background: var(--bg);
-  color: var(--fg);
-  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
-}
-
-#app { max-width: 40rem; margin: 0 auto; }
-
-h1 { margin: 0; font-size: 1.75rem; letter-spacing: -0.01em; }
-
-.sub { margin: 0.25rem 0 2rem; color: var(--muted); }
-
-.card {
-  border: 1px solid var(--line);
-  border-radius: 10px;
-  padding: 1.25rem;
-}
-
-button {
-  font: inherit;
-  padding: 0.5rem 1rem;
-  border: 0;
-  border-radius: 6px;
-  background: var(--accent);
-  color: #fff;
-  cursor: pointer;
-}
-
-button:disabled { opacity: 0.6; cursor: default; }
-
-pre {
-  margin: 1rem 0 0;
-  padding: 0.75rem;
-  overflow-x: auto;
-  border-radius: 6px;
-  background: color-mix(in srgb, var(--fg) 6%, transparent);
-}
-
-.error { color: #d24b4b; }

tests/fixtures/yahoo_es_1h.json

@@ -0,0 +1,368 @@
+{
+ "chart": {
+  "result": [
+   {
+    "meta": {
+     "currency": "USD",
+     "symbol": "ES=F",
+     "exchangeName": "CME",
+     "fullExchangeName": "CME",
+     "instrumentType": "FUTURE",
+     "firstTradeDate": 969249600,
+     "regularMarketTime": 1786324854,
+     "hasPrePostMarketData": false,
+     "gmtoffset": -14400,
+     "timezone": "EDT",
+     "exchangeTimezoneName": "America/New_York",
+     "regularMarketPrice": 7778.0,
+     "fiftyTwoWeekHigh": 7820.25,
+     "fiftyTwoWeekLow": 6353.25,
+     "regularMarketDayHigh": 7779.25,
+     "regularMarketDayLow": 7763.0,
+     "regularMarketVolume": 25260,
+     "shortName": "E-Mini S&P 500 Sep 26",
+     "chartPreviousClose": 7765.5,
+     "previousClose": 7779.75,
+     "scale": 3,
+     "priceHint": 2,
+     "currentTradingPeriod": {
+      "pre": {
+       "timezone": "EDT",
+       "end": 1786248000,
+       "start": 1786248000,
+       "gmtoffset": -14400
+      },
+      "regular": {
+       "timezone": "EDT",
+       "end": 1786334340,
+       "start": 1786248000,
+       "gmtoffset": -14400
+      },
+      "post": {
+       "timezone": "EDT",
+       "end": 1786334340,
+       "start": 1786334340,
+       "gmtoffset": -14400
+      }
+     },
+     "tradingPeriods": [
+      [
+       {
+        "timezone": "EDT",
+        "end": 1785902340,
+        "start": 1785816000,
+        "gmtoffset": -14400
+       }
+      ],
+      [
+       {
+        "timezone": "EDT",
+        "end": 1785988740,
+        "start": 1785902400,
+        "gmtoffset": -14400
+       }
+      ],
+      [
+       {
+        "timezone": "EDT",
+        "end": 1786075140,
+        "start": 1785988800,
+        "gmtoffset": -14400
+       }
+      ],
+      [
+       {
+        "timezone": "EDT",
+        "end": 1786161540,
+        "start": 1786075200,
+        "gmtoffset": -14400
+       }
+      ],
+      [
+       {
+        "timezone": "EDT",
+        "end": 1786334340,
+        "start": 1786248000,
+        "gmtoffset": -14400
+       }
+      ]
+     ],
+     "dataGranularity": "1h",
+     "range": "5d",
+     "validRanges": [
+      "1d",
+      "5d",
+      "1mo",
+      "3mo",
+      "6mo",
+      "1y",
+      "2y",
+      "5y",
+      "10y",
+      "ytd",
+      "max"
+     ]
+    },
+    "timestamp": [
+     1785816000,
+     1785819600,
+     1785823200,
+     1785826800,
+     1785830400,
+     1785834000,
+     1785837600,
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+     1785938400,
+     1785942000,
+     1785945600,
+     1785949200,
+     1785952800,
+     1785956400
+    ],
+    "indicators": {
+     "quote": [
+      {
+       "open": [
+        7644.0,
+        7645.25,
+        7647.75,
+        7644.5,
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+        7637.0,
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+       "close": [
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+       ],
+       "low": [
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+       ],
+       "volume": [
+        0,
+        5511,
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+        18165,
+        14744,
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+        21498,
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+        203055,
+        265756,
+        189580,
+        148224,
+        81542,
+        72103,
+        207321
+       ],
+       "high": [
+        7646.5,
+        7649.5,
+        7650.0,
+        7648.0,
+        7645.75,
+        7638.5,
+        7647.75,
+        7657.75,
+        7656.25,
+        7686.5,
+        7716.5,
+        7741.25,
+        7755.75,
+        7783.75,
+        7777.25,
+        7786.0,
+        7781.25,
+        null,
+        7783.25,
+        7782.75,
+        7785.5,
+        7786.0,
+        7788.75,
+        7792.5,
+        7792.75,
+        7800.0,
+        7799.5,
+        7799.5,
+        7796.75,
+        7792.0,
+        7798.0,
+        7799.75,
+        7805.25,
+        7820.25,
+        7818.75,
+        7791.5,
+        7773.75,
+        7773.0,
+        7774.5,
+        7771.5
+       ]
+      }
+     ]
+    }
+   }
+  ],
+  "error": null
+ }
+}

tests/test_aggregator.py

@@ -0,0 +1,43 @@
+from app.bars.aggregator import Aggregator
+from app.bars.models import Bar, Timeframe
+
+
+def minute(t: int, price: float = 100, volume: int = 1) -> Bar:
+    return Bar(Timeframe.M1, t, price, price + 1, price - 1, price + 0.5, volume, True, "ES=F", "replay")
+
+
+def test_aggregates_all_timeframes_and_closes_on_later_bucket():
+    aggregator = Aggregator()
+    first = aggregator.update(minute(0, 100, 2))
+    second = aggregator.update(minute(60, 102, 3))
+    boundary = aggregator.update(minute(900, 105, 4))
+
+    assert {bar.tf for bar in first} == set(Timeframe)
+    forming_15m = [bar for bar in second if bar.tf is Timeframe.M15][-1]
+    assert (forming_15m.o, forming_15m.h, forming_15m.l, forming_15m.c, forming_15m.v) == (
+        100,
+        103,
+        99,
+        102.5,
+        5,
+    )
+    bars_15m = [bar for bar in boundary if bar.tf is Timeframe.M15]
+    assert [(bar.t, bar.closed) for bar in bars_15m] == [(0, True), (900, False)]
+
+
+def test_gap_closes_previous_bucket_without_synthesizing_empty_bars():
+    aggregator = Aggregator([Timeframe.M5])
+    aggregator.update(minute(0))
+    output = aggregator.update(minute(1800))
+
+    assert [(bar.t, bar.closed) for bar in output] == [(0, True), (1800, False)]
+
+
+def test_replay_is_deterministic():
+    tape = [minute(t, 100 + index) for index, t in enumerate(range(0, 3600, 60))]
+
+    def run():
+        aggregator = Aggregator()
+        return [bar.to_dict() for source in tape for bar in aggregator.update(source)]
+
+    assert run() == run()

tests/test_alerts.py

@@ -0,0 +1,28 @@
+from app.analysis.alerts import AlertEngine
+from app.analysis.confluence import cluster_levels
+from app.analysis.levels import Level, LevelKind, Side
+from app.bars.models import Timeframe
+
+
+def level(id_: str, price: float, weight: float):
+    return Level(id_, LevelKind.MA, Timeframe.D1, Side.RESISTANCE, weight, 1, id_, 100, price, 0, None, 0, 100, 100, False, False)
+
+
+def test_oscillation_fires_once_until_separation_and_cooldown():
+    engine = AlertEngine(min_score=6, cooldown_seconds=900)
+    levels = [level("a", 100, 3), level("b", 100.1, 4)]
+    cluster = cluster_levels(levels, 100, 100, 1)
+
+    assert len(engine.evaluate(cluster, 100, 1, 0, "/ES")) == 1
+    assert engine.evaluate(cluster, 100.2, 1, 60, "/ES") == []
+    assert engine.evaluate(cluster, 100, 1, 901, "/ES") == []
+
+    far_cluster = cluster_levels(levels, 100, 103, 1)
+    assert engine.evaluate(far_cluster, 103, 1, 902, "/ES") == []
+    assert len(engine.evaluate(cluster, 100, 1, 903, "/ES")) == 1
+
+
+def test_score_threshold_blocks_two_daily_mas_at_default_calibration():
+    engine = AlertEngine(min_score=28)
+    cluster = cluster_levels([level("a", 100, 12), level("b", 100.1, 12)], 100, 100, 1)
+    assert engine.evaluate(cluster, 100, 1, 0, "/ES") == []

tests/test_auth.py

@@ -0,0 +1,79 @@
+import pytest
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+from starlette.websockets import WebSocketDisconnect
+
+from app.api.meta import router as meta_router
+from app.api.routes import router as api_router
+from app.api.ws import router as ws_router
+from app.config import Settings
+from app.runtime import Runtime
+
+
+@pytest.fixture
+def client(tmp_path):
+    def build(token: str) -> TestClient:
+        settings = Settings(
+            chart_auth_token=token,
+            manual_lines_path=tmp_path / "manual_lines.json",
+        )
+        app = FastAPI()
+        app.include_router(meta_router)
+        app.include_router(api_router)
+        app.include_router(ws_router)
+        app.state.runtime = Runtime(settings)
+        return TestClient(app)
+
+    return build
+
+
+def test_open_when_no_token_configured(client):
+    assert client("").get("/api/bars").status_code == 200
+
+
+def test_rejects_missing_token(client):
+    assert client("s3cret").get("/api/bars").status_code == 401
+
+
+def test_rejects_wrong_token(client):
+    response = client("s3cret").get("/api/bars", headers={"X-Chart-Token": "nope"})
+    assert response.status_code == 401
+
+
+def test_accepts_header_token(client):
+    response = client("s3cret").get("/api/bars", headers={"X-Chart-Token": "s3cret"})
+    assert response.status_code == 200
+
+
+def test_accepts_query_token(client):
+    assert client("s3cret").get("/api/bars?token=s3cret").status_code == 200
+
+
+def test_writes_are_protected(client):
+    payload = {
+        "tf": "1m",
+        "side": "support",
+        "anchor_t": 1,
+        "anchor_p": 1.0,
+        "end_t": 2,
+        "end_p": 2.0,
+    }
+    assert client("s3cret").post("/api/lines", json=payload).status_code == 401
+
+
+@pytest.mark.parametrize("path", ["/api/health", "/api/version"])
+def test_meta_endpoints_stay_open(client, path):
+    """bin/wait-deploy polls /api/version without carrying the token."""
+    assert client("s3cret").get(path).status_code == 200
+
+
+def test_websocket_rejects_missing_token(client):
+    with pytest.raises(WebSocketDisconnect) as excinfo:
+        with client("s3cret").websocket_connect("/ws"):
+            pass
+    assert excinfo.value.code == 1008
+
+
+def test_websocket_accepts_query_token(client):
+    with client("s3cret").websocket_connect("/ws?token=s3cret") as socket:
+        assert socket.receive_json()["type"] == "snapshot"

tests/test_confluence.py

@@ -0,0 +1,39 @@
+from app.analysis.confluence import cluster_levels
+from app.analysis.levels import Level, LevelKind, Side
+from app.bars.models import Timeframe
+
+
+def level(id_: str, price: float, weight: float, tf=Timeframe.H1):
+    return Level(id_, LevelKind.MA, tf, Side.RESISTANCE, weight, 1, id_, 100, price, 0, None, 0, 100, 100, False, False)
+
+
+def test_single_linkage_cluster_has_known_score_and_effective_side():
+    clusters = cluster_levels(
+        [level("a", 99.8, 2), level("b", 100.1, 4), level("c", 105, 1)],
+        current_t=200,
+        current_price=99,
+        atr15=1,
+    )
+
+    assert len(clusters) == 1
+    assert clusters[0].low == 99.8
+    assert clusters[0].high == 100.1
+    assert clusters[0].score == 6
+    assert clusters[0].side is Side.RESISTANCE
+
+
+def test_lone_daily_level_is_emitted():
+    clusters = cluster_levels([level("daily", 98, 12, Timeframe.D1)], 200, 100, 1)
+    assert len(clusters) == 1
+    assert clusters[0].side is Side.SUPPORT
+
+
+def test_levels_on_opposite_sides_of_price_do_not_cluster():
+    clusters = cluster_levels([level("below", 99.9, 2), level("above", 100.1, 2)], 200, 100, 1)
+    assert clusters == []
+
+
+def test_level_ended_before_current_time_is_excluded():
+    ended = level("ended", 98, 12, Timeframe.D1)
+    ended.cutoff_t = 150
+    assert cluster_levels([ended], 200, 100, 1) == []

tests/test_manual_lines.py

@@ -0,0 +1,42 @@
+from app.analysis.levels import Side
+from app.analysis.manual_lines import ManualLine, ManualLineStore
+from app.analysis.confluence import cluster_levels
+from app.analysis.levels import Level, LevelKind
+from app.bars.models import Timeframe
+
+
+def sample_line():
+    return ManualLine("ml_test", Timeframe.H4, Side.RESISTANCE, 100, 5000, -0.01, 200, 300, number=1)
+
+
+def test_json_persistence_round_trip(tmp_path):
+    path = tmp_path / "manual_lines.json"
+    store = ManualLineStore(path)
+    store.add(sample_line())
+
+    loaded = ManualLineStore(path)
+    assert list(loaded.lines.values()) == [sample_line()]
+
+    loaded.update("ml_test", {"note": "major swing"})
+    assert ManualLineStore(path).lines["ml_test"].note == "major swing"
+    loaded.delete("ml_test")
+    assert ManualLineStore(path).lines == {}
+
+
+def test_four_hour_line_uses_absolute_time_on_one_minute_chart():
+    level = sample_line().to_level()
+    instant = 160
+    assert level.tf is Timeframe.H4
+    assert level.price_at(instant) == 4999.4
+    assert level.weight == 8
+
+
+def test_manual_line_raises_existing_ma_cluster_score():
+    ma = Level(
+        "ma", LevelKind.MA, Timeframe.D1, Side.RESISTANCE, 12, 1, "1d SMA20",
+        100, 5000, 0, None, 0, 100, 100, False, False, 20,
+    )
+    before = cluster_levels([ma], 160, 4998, 2)[0]
+    after = cluster_levels([ma, sample_line().to_level()], 160, 4998, 2)[0]
+    assert before.score == 12
+    assert after.score == 20

tests/test_moving_averages.py

@@ -0,0 +1,61 @@
+from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
+
+from app.analysis.moving_averages import build_ma_levels, project_step
+from app.bars.models import Bar, Timeframe
+
+ET = ZoneInfo("America/New_York")
+
+
+def daily_bars(count: int, last_forming: bool = False) -> list[Bar]:
+    start = datetime(2025, 1, 5, 18, tzinfo=ET)
+    return [
+        Bar(
+            Timeframe.D1,
+            int((start + timedelta(days=index)).timestamp()),
+            index + 1,
+            index + 2,
+            index,
+            index + 1,
+            100,
+            not (last_forming and index == count - 1),
+            "ES=F",
+            "replay",
+        )
+        for index in range(count)
+    ]
+
+
+def test_daily_sma_set_has_known_values_and_stable_ids():
+    bars = daily_bars(210)
+    definitions = {Timeframe.D1: [("sma", p) for p in (10, 20, 50, 100, 200)]}
+    levels = build_ma_levels({Timeframe.D1: bars}, definitions)
+
+    assert [level.id for level in levels] == [f"ma:1d:sma:{p}" for p in (10, 20, 50, 100, 200)]
+    assert [level.anchor_p for level in levels] == [205.5, 200.5, 185.5, 160.5, 110.5]
+
+
+def test_nothing_emitted_before_closed_bar_warmup():
+    bars = daily_bars(200, last_forming=True)
+    assert build_ma_levels({Timeframe.D1: bars}, {Timeframe.D1: [("sma", 200)]}) == []
+
+
+def test_forming_daily_value_is_provisional():
+    bars = daily_bars(201, last_forming=True)
+    level = build_ma_levels({Timeframe.D1: bars}, {Timeframe.D1: [("sma", 200)]})[0]
+    assert level.provisional is True
+
+
+def test_step_projection_changes_only_at_session_boundary():
+    session_one = daily_bars(1)[0].t
+    session_two = daily_bars(2)[1].t
+    minutes = [
+        Bar(Timeframe.M1, t, 1, 1, 1, 1, 0, True, "ES=F", "replay")
+        for t in (session_one, session_one + 60, session_two - 60, session_two)
+    ]
+    assert project_step([(session_one, 100), (session_two, 101)], minutes) == [
+        (session_one, 100),
+        (session_one + 60, 100),
+        (session_two - 60, 100),
+        (session_two, 101),
+    ]

tests/test_replay.py

@@ -0,0 +1,31 @@
+import json
+
+import pytest
+
+from app.bars.models import Bar, Timeframe
+from app.market.recorder import Recorder
+from app.market.replay import ReplaySource
+
+
+def sample_bars():
+    return [
+        Bar(Timeframe.M1, 100 + i * 60, 1, 2, 0.5, 1.5, 10, True, "ES=F", "yahoo")
+        for i in range(2)
+    ]
+
+
+@pytest.mark.asyncio
+async def test_recorded_tape_replays_identically(tmp_path):
+    expected = sample_bars()
+
+    async def source():
+        for bar in expected:
+            yield bar
+
+    tape = tmp_path / "tape.jsonl"
+    recorded = [bar async for bar in Recorder(tape).record(source())]
+    replayed = [bar async for bar in ReplaySource(tape).stream("ES=F")]
+
+    assert recorded == expected
+    assert replayed == expected
+    assert len([json.loads(line) for line in tape.read_text().splitlines()]) == 2

tests/test_session.py

@@ -0,0 +1,63 @@
+from datetime import datetime
+from zoneinfo import ZoneInfo
+
+import pytest
+
+from app.bars.models import Timeframe
+from app.bars.session import bucket_start
+
+UTC = ZoneInfo("UTC")
+ET = ZoneInfo("America/New_York")
+
+
+def epoch(value: str, zone=UTC) -> int:
+    return int(datetime.fromisoformat(value).replace(tzinfo=zone).timestamp())
+
+
+@pytest.mark.parametrize(
+    ("value", "tf", "expected"),
+    [
+        ("2026-08-09T22:00:00", Timeframe.D1, "2026-08-09T22:00:00"),
+        ("2026-08-10T16:37:00", Timeframe.D1, "2026-08-09T22:00:00"),
+        ("2026-08-14T20:59:00", Timeframe.D1, "2026-08-13T22:00:00"),
+        ("2026-08-10T21:30:00", Timeframe.D1, "2026-08-09T22:00:00"),
+        ("2026-08-10T22:00:00", Timeframe.D1, "2026-08-10T22:00:00"),
+        ("2026-08-10T01:59:00", Timeframe.H4, "2026-08-09T22:00:00"),
+        ("2026-08-10T02:00:00", Timeframe.H4, "2026-08-10T02:00:00"),
+        ("2026-08-10T17:59:00", Timeframe.H4, "2026-08-10T14:00:00"),
+    ],
+)
+def test_session_boundaries(value, tf, expected):
+    assert bucket_start(epoch(value), tf) == epoch(expected)
+
+
+def test_intraday_buckets_use_utc_boundaries():
+    assert bucket_start(epoch("2026-08-10T12:37:45"), Timeframe.M15) == epoch(
+        "2026-08-10T12:30:00"
+    )
+
+
+@pytest.mark.parametrize(
+    ("value", "expected"),
+    [
+        # Spring forward: the 22:00 ET bucket ends at 02:00 EDT after three real hours.
+        ("2026-03-08T06:59:00", "2026-03-08T03:00:00"),
+        ("2026-03-08T07:00:00", "2026-03-08T07:00:00"),
+        # Fall back: the 22:00 ET bucket lasts five real hours and ends at 02:00 EST.
+        ("2026-11-01T06:59:00", "2026-11-01T02:00:00"),
+        ("2026-11-01T07:00:00", "2026-11-01T07:00:00"),
+    ],
+)
+def test_four_hour_wall_clock_anchor_across_dst(value, expected):
+    assert bucket_start(epoch(value), Timeframe.H4) == epoch(expected)
+
+
+@pytest.mark.parametrize(
+    ("local_value", "expected_local"),
+    [
+        ("2026-03-08T18:00:00", "2026-03-08T18:00:00"),
+        ("2026-11-01T18:00:00", "2026-11-01T18:00:00"),
+    ],
+)
+def test_sunday_open_across_dst(local_value, expected_local):
+    assert bucket_start(epoch(local_value, ET), Timeframe.D1) == epoch(expected_local, ET)

tests/test_store.py

@@ -0,0 +1,17 @@
+from app.bars.models import Bar, Timeframe
+from app.bars.store import InMemoryBarStore
+
+
+def bar(t, close=1):
+    return Bar(Timeframe.M1, t, 1, 2, 0, close, 10, False, "ES=F", "replay")
+
+
+def test_store_replaces_forming_bar_and_bounds_history():
+    store = InMemoryBarStore(2)
+    store.put(bar(60))
+    store.put(bar(60, 2))
+    store.put(bar(120))
+    store.put(bar(180))
+
+    assert [value.t for value in store.get(Timeframe.M1)] == [120, 180]
+    assert store.get(Timeframe.M1, 1)[0].t == 180

tests/test_yahoo.py

@@ -0,0 +1,40 @@
+import json
+from pathlib import Path
+
+import httpx
+import pytest
+
+from app.bars.models import Timeframe
+from app.market.yahoo import MAX_1M_WINDOW_SECONDS, YahooSource, parse_chart
+
+
+FIXTURE = Path(__file__).parent / "fixtures" / "yahoo_es_1h.json"
+
+
+def test_parser_filters_null_ohlc_rows():
+    payload = json.loads(FIXTURE.read_text())
+    raw_count = len(payload["chart"]["result"][0]["timestamp"])
+    bars = parse_chart(payload, Timeframe.H1)
+
+    assert len(bars) == raw_count - 1
+    assert all(None not in (bar.o, bar.h, bar.l, bar.c) for bar in bars)
+    assert all(bar.source == "yahoo" and bar.symbol == "ES=F" for bar in bars)
+
+
+@pytest.mark.asyncio
+async def test_one_minute_history_is_windowed_and_deduplicated():
+    payload = json.loads(FIXTURE.read_text())
+    calls = []
+
+    async def handler(request: httpx.Request):
+        calls.append(request)
+        return httpx.Response(200, json=payload)
+
+    async with httpx.AsyncClient(transport=httpx.MockTransport(handler)) as client:
+        source = YahooSource(client=client)
+        bars = await source.history(
+            "ES=F", Timeframe.M1, 0, MAX_1M_WINDOW_SECONDS * 2 + 1
+        )
+
+    assert len(calls) == 3
+    assert len(bars) == len({bar.t for bar in parse_chart(payload, Timeframe.M1)})