feat(telegram): live editable task tracker (Variant B+), replace 15-message spam

Replace the ~15 separate Telegram messages per task (agent start/finish, stage
transition, QG-pending, tech noise) with ONE live tracker message edited in
place (editMessageText) on every stage transition. Only attention-worthy events
are still sent as SEPARATE, notifying messages: approve-gate, deploy-fail,
agent-fail, task error.

- db.py: idempotent ALTERs — tasks.tracker_message_id, tasks.title,
  tasks.brd_review_started_at/ended_at, agent_runs.model. Helpers for
  tracker message_id + BRD-review clock.
- usage.py: short_model_name() (strip provider/claude- prefix); parse model
  from result-JSON modelUsage; record_usage persists model.
- notifications.py: render_task_tracker(task_id) (stateless render from
  agent_runs), update_task_tracker (sendMessage->store id->editMessageText with
  fallback to a new message, silent), edit_telegram(). Per-stage line
  in↓/out↑·cost·model, ⏸️ Ревью БРД (human time), 💰 totals, finish block
  (⏱️ wall/agents/yours, 🔗 PR · 📦). notify_* are now tracker-only/log-only
  except the four alerts.
- stage_engine.py: stamp brd_review_ended on analysis->architecture advance.
- webhooks/plane.py: persist task title on creation.
- tests/test_telegram_tracker.py: render, short_model_name, send/edit/fallback,
  separate-vs-silent alert behavior.

src/usage.py

@@ -79,9 +79,60 @@ def parse_usage_from_text(text: str) -> dict | None:
             usage.get("cache_creation_input_tokens", usage.get("cache_creation_tokens"))
         ),
         "cost_usd": _float(cost),
+        # Telegram live tracker: the model the run actually used. claude
+        # --output-format json reports it under modelUsage (a dict keyed by the
+        # full model id) and/or a top-level "model" field. We keep the FULL name
+        # here; short_model_name() trims it for the tracker. None when unknown.
+        "model": _extract_model(candidate),
     }
 
 
+def _extract_model(candidate: dict) -> str | None:
+    """Best-effort: pull the model id out of a claude result JSON object.
+
+    Prefers modelUsage (a dict keyed by full model ids, e.g.
+    {"claude-opus-4-8": {...}}) and returns the key with the most output
+    tokens; falls back to a top-level "model" string. Never raises -> None.
+    """
+    try:
+        mu = candidate.get("modelUsage")
+        if isinstance(mu, dict) and mu:
+            def _out(v):
+                try:
+                    return int((v or {}).get("outputTokens", 0))
+                except (TypeError, ValueError, AttributeError):
+                    return 0
+            best = max(mu.items(), key=lambda kv: _out(kv[1]))
+            if best and best[0]:
+                return str(best[0])
+        model = candidate.get("model")
+        if isinstance(model, str) and model:
+            return model
+    except Exception:
+        pass
+    return None
+
+
+def short_model_name(full: str | None) -> str:
+    """Trim a full model id to a short tag for the tracker.
+
+    'tokenator/claude-opus-4-8'  -> 'opus-4-8'
+    'vibecode/claude-sonnet-4.6' -> 'sonnet-4.6'
+    'claude-opus-4-8'            -> 'opus-4-8'
+    Returns '' when full is falsy so callers can omit the ' · <model>' suffix.
+    """
+    if not full:
+        return ""
+    name = str(full).strip()
+    # Drop any provider prefix up to and including the last '/'.
+    if "/" in name:
+        name = name.rsplit("/", 1)[-1]
+    # Drop a leading 'claude-' marketing prefix.
+    if name.startswith("claude-"):
+        name = name[len("claude-"):]
+    return name
+
+
 def _extract_last_json_object(text: str) -> dict | None:
     """Return the last balanced top-level JSON object in `text` that parses.
 
@@ -157,13 +208,15 @@ def record_usage(run_id: int, usage: dict | None):
     try:
         conn.execute(
             "UPDATE agent_runs SET input_tokens=?, output_tokens=?, "
-            "cache_read_tokens=?, cache_creation_tokens=?, cost_usd=? WHERE id=?",
+            "cache_read_tokens=?, cache_creation_tokens=?, cost_usd=?, "
+            "model=COALESCE(?, model) WHERE id=?",
             (
                 usage.get("input_tokens"),
                 usage.get("output_tokens"),
                 usage.get("cache_read_tokens"),
                 usage.get("cache_creation_tokens"),
                 usage.get("cost_usd"),
+                usage.get("model"),
                 run_id,
             ),
         )