Implement recorrelation logic

drb-c2-core/app/config.py

@@ -27,6 +27,11 @@ class Settings(BaseSettings):
     embedding_similarity_threshold: float = 0.93  # slow-path cosine threshold (tiebreaker only)
     location_proximity_km: float = 0.5        # radius for location-proximity matching
     incident_auto_resolve_minutes: int = 90   # auto-resolve after N minutes with no new calls
+    recorrelation_scan_minutes: int = 15      # re-examine orphaned calls ended within this window
+
+    # Vocabulary learning
+    vocabulary_induction_interval_hours: int = 24   # how often the induction loop runs
+    vocabulary_induction_sample_tokens:  int = 4000  # ~tokens of transcript text sampled per system
 
     # Internal service key — allows server-side services (discord bot) to call C2 without Firebase
     service_key: Optional[str] = None

drb-c2-core/app/internal/firestore.py

@@ -57,6 +57,24 @@ async def collection_list(collection: str, **filters) -> list[dict]:
     return await asyncio.to_thread(_query)
 
 
+async def collection_where(
+    collection: str,
+    conditions: list[tuple[str, str, Any]],
+) -> list[dict]:
+    """
+    Query a collection with arbitrary where-clauses.
+    conditions: list of (field, op, value) — e.g. [("ended_at", ">=", cutoff_dt)]
+    Supports any Firestore operator: "==", "!=", "<", "<=", ">", ">=".
+    """
+    def _query():
+        ref = db.collection(collection)
+        for field, op, value in conditions:
+            ref = ref.where(field, op, value)
+        return [doc.to_dict() for doc in ref.stream()]
+
+    return await asyncio.to_thread(_query)
+
+
 async def doc_delete(collection: str, doc_id: str) -> None:
     ref = db.collection(collection).document(doc_id)
     await asyncio.to_thread(ref.delete)

drb-c2-core/app/internal/incident_correlator.py

@@ -46,17 +46,27 @@ async def correlate_call(
     incident_type: Optional[str],
     location: Optional[str] = None,
     location_coords: Optional[dict] = None,
+    reference_time: Optional[datetime] = None,
+    create_if_new: bool = True,
 ) -> Optional[str]:
     """
     Link call_id to an existing incident or create a new one.
-    Returns the incident_id, or None if skipped (no type and no talkgroup match).
+
+    reference_time — time anchor for the time-limited paths (location + slow).
+                     Defaults to now. Pass call.started_at when re-correlating
+                     orphaned calls so the window is anchored to when the call
+                     actually happened, not when the sweep runs.
+    create_if_new  — when False, skip new-incident creation (re-correlation only
+                     links to existing incidents; it never creates new ones).
+
+    Returns the incident_id, or None if skipped.
     """
-    now    = datetime.now(timezone.utc)
+    now    = reference_time or datetime.now(timezone.utc)
     window = timedelta(hours=settings.correlation_window_hours)
 
     # Fetch all active incidents cross-type (mutual aid needs this)
     all_active = await fstore.collection_list("incidents", status="active")
-    recent     = [inc for inc in all_active if _within_window(inc, now, window)]
+    recent     = [inc for inc in all_active if _within_window_of(inc, now, window)]
 
     # Fetch call doc once — reused for disambiguation, embedding merge, unit accumulation
     call_doc      = await fstore.doc_get("calls", call_id) or {}
@@ -147,14 +157,14 @@ async def correlate_call(
             location, location_coords, call_units, call_vehicles, call_embedding, now,
             talkgroup_name=talkgroup_name, incident_type=incident_type,
         )
-    elif incident_type:
+    elif incident_type and create_if_new:
         incident_id = await _create_incident(
             call_id, incident_type, talkgroup_id, talkgroup_name, system_id,
             tags, location, location_coords,
             call_units, call_vehicles, call_embedding, call_severity, now,
         )
     else:
-        # Unclassified call, no talkgroup match found — nothing to do
+        # No match and either no type or creation suppressed — nothing to do
         return None
 
     await fstore.doc_set("calls", call_id, {"incident_id": incident_id})
@@ -165,14 +175,19 @@ async def correlate_call(
 # Internal helpers
 # ─────────────────────────────────────────────────────────────────────────────
 
-def _within_window(inc: dict, now: datetime, window: timedelta) -> bool:
+def _within_window_of(inc: dict, anchor: datetime, window: timedelta) -> bool:
+    """
+    True if the incident's started_at is within `window` of `anchor` in either
+    direction.  Using started_at (not updated_at) means re-correlation anchored
+    to a call's started_at correctly matches incidents created shortly *after*
+    that call (e.g. a welfare check at T+0 vs. an incident created at T+15m).
+    """
     try:
-        dt = datetime.fromisoformat(
+        raw = inc.get("started_at") or inc.get("updated_at") or ""
-            str(inc.get("updated_at", "")).replace("Z", "+00:00")
+        dt  = datetime.fromisoformat(str(raw).replace("Z", "+00:00"))
-        )
         if dt.tzinfo is None:
             dt = dt.replace(tzinfo=timezone.utc)
-        return (now - dt) <= window
+        return abs((anchor - dt).total_seconds()) <= window.total_seconds()
     except Exception:
         return False
 

drb-c2-core/app/internal/intelligence.py

@@ -36,7 +36,7 @@ Rules:
 
 System: {system_id}
 Talkgroup: {talkgroup_name}
-{transcript_block}"""
+{vocabulary_block}{transcript_block}"""
 
 # Nominatim viewbox half-width in degrees (~11 km at mid-latitudes)
 _GEO_DELTA = 0.1
@@ -76,8 +76,15 @@ async def extract_tags(
     Side-effect: updates calls/{call_id} in Firestore with tags, location,
     location_coords, vehicles, units, severity, transcript_corrected; also stores embedding.
     """
+    # Load per-system vocabulary for prompt injection
+    vocabulary: list[str] = []
+    if system_id:
+        from app.internal.vocabulary_learner import get_vocabulary
+        vocab_data = await get_vocabulary(system_id)
+        vocabulary = vocab_data.get("vocabulary") or []
+
     result = await asyncio.to_thread(
-        _sync_extract, transcript, talkgroup_name, talkgroup_id, system_id, segments
+        _sync_extract, transcript, talkgroup_name, talkgroup_id, system_id, segments, vocabulary
     )
 
     tags: list[str]              = result.get("tags") or []
@@ -233,6 +240,7 @@ def _sync_extract(
     talkgroup_id: Optional[int],
     system_id: Optional[str],
     segments: Optional[list[dict]],
+    vocabulary: Optional[list[str]] = None,
 ) -> dict:
     """Call GPT-4o mini and parse the JSON response."""
     from app.config import settings
@@ -242,11 +250,13 @@ def _sync_extract(
         logger.warning("OPENAI_API_KEY not set — intelligence extraction disabled.")
         return {}
 
+    from app.internal.vocabulary_learner import build_gpt_vocab_block
     tg = f"{talkgroup_name} (TGID {talkgroup_id})" if talkgroup_id else (talkgroup_name or "unknown")
     prompt = _PROMPT_TEMPLATE.format(
         transcript_block=_build_transcript_block(transcript, segments),
         talkgroup_name=tg,
         system_id=system_id or "unknown",
+        vocabulary_block=build_gpt_vocab_block(vocabulary or []),
     )
 
     try:

drb-c2-core/app/internal/recorrelation_sweep.py

@@ -0,0 +1,108 @@
+"""
+Re-correlation sweep.
+
+Runs every summary_interval_minutes (same tick as the summarizer).  Each pass
+finds calls that are:
+  - recently ended  (ended_at within the last recorrelation_scan_minutes)
+  - still orphaned  (incident_id is null)
+
+and re-runs the incident correlator against currently-active incidents, using
+the call's own started_at as the time anchor so the window is correct regardless
+of when the sweep fires.
+
+Never creates new incidents — link-only.  Zero LLM tokens (uses pre-computed
+talkgroup strings, haversine math, and stored embeddings).
+"""
+import asyncio
+from datetime import datetime, timezone, timedelta
+from typing import Optional
+from app.internal.logger import logger
+from app.internal import firestore as fstore
+from app.config import settings
+
+
+async def recorrelation_loop() -> None:
+    interval = settings.summary_interval_minutes * 60
+    logger.info(
+        f"Re-correlation sweep started — "
+        f"interval: {settings.summary_interval_minutes}m, "
+        f"scan window: {settings.recorrelation_scan_minutes}m"
+    )
+    while True:
+        await asyncio.sleep(interval)
+        try:
+            await _run_sweep_pass()
+        except Exception as e:
+            logger.error(f"Re-correlation sweep failed: {e}")
+
+
+async def _run_sweep_pass() -> None:
+    cutoff = datetime.now(timezone.utc) - timedelta(minutes=settings.recorrelation_scan_minutes)
+
+    # Server-side range query: only calls that ended within the scan window.
+    # Filter incident_id=null client-side (Firestore can't query for missing fields).
+    # This keeps the fetched set small regardless of total collection size.
+    recent_ended = await fstore.collection_where("calls", [
+        ("status",   "==",  "ended"),
+        ("ended_at", ">=",  cutoff),
+    ])
+    orphans = [c for c in recent_ended if not c.get("incident_id")]
+
+    if not orphans:
+        return
+
+    logger.info(f"Re-correlation sweep: {len(orphans)} orphaned call(s) to check")
+    linked = 0
+    for call in orphans:
+        if await _recorrelate_orphan(call):
+            linked += 1
+
+    if linked:
+        logger.info(f"Re-correlation sweep: linked {linked}/{len(orphans)} orphaned call(s)")
+
+
+async def _recorrelate_orphan(call: dict) -> bool:
+    """
+    Attempt to link a single orphaned call to an existing incident.
+    Returns True if a match was found and the call was linked.
+    """
+    from app.internal import incident_correlator
+
+    call_id      = call.get("call_id")
+    started_at   = _parse_dt(call.get("started_at"))
+    if not call_id or not started_at:
+        return False
+
+    # All data needed for correlation was stored by the first-pass extraction.
+    incident_id = await incident_correlator.correlate_call(
+        call_id        = call_id,
+        node_id        = call.get("node_id", ""),
+        system_id      = call.get("system_id"),
+        talkgroup_id   = call.get("talkgroup_id"),
+        talkgroup_name = call.get("talkgroup_name"),
+        tags           = call.get("tags") or [],
+        incident_type  = call.get("incident_type"),
+        location       = call.get("location"),
+        location_coords= call.get("location_coords"),
+        reference_time = started_at,   # anchor window to when the call happened
+        create_if_new  = False,        # never create — link-only
+    )
+
+    if incident_id:
+        logger.info(
+            f"Re-correlation: linked orphaned call {call_id} → incident {incident_id}"
+        )
+        return True
+    return False
+
+
+def _parse_dt(value) -> Optional[datetime]:
+    if not value:
+        return None
+    try:
+        dt = datetime.fromisoformat(str(value).replace("Z", "+00:00"))
+        if dt.tzinfo is None:
+            dt = dt.replace(tzinfo=timezone.utc)
+        return dt
+    except Exception:
+        return None

drb-c2-core/app/internal/transcription.py

@@ -28,6 +28,7 @@ async def transcribe_call(
     call_id: str,
     gcs_uri: str,
     talkgroup_name: Optional[str] = None,
+    system_id: Optional[str] = None,
 ) -> tuple[Optional[str], list[dict]]:
     """
     Transcribe audio at the given GCS URI and store the result in Firestore.
@@ -39,8 +40,17 @@ async def transcribe_call(
     if not gcs_uri or not gcs_uri.startswith("gs://"):
         return None, []
 
+    # Load vocabulary for this system (empty list if none yet)
+    vocabulary: list[str] = []
+    if system_id:
+        from app.internal.vocabulary_learner import get_vocabulary
+        vocab_data = await get_vocabulary(system_id)
+        vocabulary = vocab_data.get("vocabulary") or []
+
     try:
-        transcript, segments = await asyncio.to_thread(_sync_transcribe, gcs_uri, talkgroup_name)
+        transcript, segments = await asyncio.to_thread(
+            _sync_transcribe, gcs_uri, talkgroup_name, vocabulary
+        )
     except Exception as e:
         logger.warning(f"Transcription failed for call {call_id}: {e}")
         return None, []
@@ -61,7 +71,11 @@ async def transcribe_call(
     return transcript, segments
 
 
-def _sync_transcribe(gcs_uri: str, talkgroup_name: Optional[str] = None) -> tuple[Optional[str], list[dict]]:
+def _sync_transcribe(
+    gcs_uri: str,
+    talkgroup_name: Optional[str] = None,
+    vocabulary: Optional[list[str]] = None,
+) -> tuple[Optional[str], list[dict]]:
     """Download audio from GCS and transcribe with OpenAI Whisper."""
     from google.cloud import storage as gcs
     from google.oauth2 import service_account
@@ -94,7 +108,10 @@ def _sync_transcribe(gcs_uri: str, talkgroup_name: Optional[str] = None) -> tupl
     try:
         blob.download_to_filename(tmp_path)
 
-        prompt = (f"Talkgroup: {talkgroup_name}. " + _WHISPER_PROMPT) if talkgroup_name else _WHISPER_PROMPT
+        from app.internal.vocabulary_learner import build_whisper_vocab_prompt
+        vocab_prefix = build_whisper_vocab_prompt(vocabulary or [])
+        tg_prefix    = f"Talkgroup: {talkgroup_name}. " if talkgroup_name else ""
+        prompt       = tg_prefix + vocab_prefix + _WHISPER_PROMPT
 
         openai_client = OpenAI(api_key=settings.openai_api_key)
         with open(tmp_path, "rb") as f:

drb-c2-core/app/internal/vocabulary_learner.py

@@ -0,0 +1,426 @@
+"""
+Per-system vocabulary learning for STT accuracy improvement.
+
+Three mechanisms:
+1. Bootstrap  — one-shot GPT-4o call generates local knowledge at system setup:
+                agencies + abbreviations, unit naming, streets, acronyms.
+2. Correction — diffs admin transcript edits, extracts corrected tokens → vocabulary.
+3. Induction  — background loop samples N tokens of transcripts per system,
+                asks GPT-4o-mini to propose new terms → queued as pending for review.
+
+Firestore schema additions on system documents:
+  vocabulary:            list[str]   — approved terms; injected into Whisper + GPT prompts
+  vocabulary_pending:    list[dict]  — induction suggestions awaiting admin review
+                                       each: {term, source, added_at}
+  vocabulary_bootstrapped: bool      — bootstrap has been run at least once
+"""
+import asyncio
+import difflib
+import json
+import random
+from datetime import datetime, timezone
+from typing import Optional
+from app.internal.logger import logger
+from app.internal import firestore as fstore
+from app.config import settings
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# Prompt templates
+# ─────────────────────────────────────────────────────────────────────────────
+
+_BOOTSTRAP_PROMPT = """\
+You are building a radio vocabulary dictionary to improve speech-to-text accuracy for a P25 \
+public-safety radio monitoring system in a specific area. The STT model has no local knowledge, \
+so common terms like "YVAC" get transcribed as "why vac", "5-baker" as "5 acre", etc.
+
+System name: {system_name}
+System type: {system_type}
+Area context: {area_hint}
+
+Return ONLY a JSON object:
+{{"vocabulary": [list of strings]}}
+
+Include terms you are confident about for this area:
+- Agency names and their radio abbreviations (e.g. "YVAC" = Yorktown Volunteer Ambulance Corps)
+- Unit ID examples using the local naming convention (e.g. "5-baker", "5-charlie", "1-david";
+  many departments use APCO phonetics: adam, baker, charles, david, edward, frank, george,
+  henry, ida, john, king, lincoln, mary, nora, ocean, paul, queen, robert, sam, tom, union,
+  victor, william, x-ray, young, zebra)
+- Major routes, roads, and key intersections
+- Local landmarks and geographic references dispatchers use
+- Agency-specific codes that differ from standard APCO
+
+Return a flat list of strings — abbreviations, proper names, unit IDs, street names.
+Do NOT include common English words. Max 80 terms. Only include what you are confident is \
+accurate for this specific area; return fewer terms rather than guessing."""
+
+_INDUCTION_PROMPT = """\
+You are analyzing P25 emergency radio transcripts to find vocabulary terms that should be \
+added to improve future speech-to-text accuracy for this system.
+
+System: {system_name}
+Existing approved vocabulary (do not re-propose these): {existing_vocab}
+
+Sampled transcripts:
+{transcript_block}
+
+Find terms that are LIKELY STT errors or local terms missing from the vocabulary:
+- Unit IDs that appear garbled (e.g. "5 acre" → "5-baker")
+- Agency acronyms spelled out phonetically (e.g. "why vac" → "YVAC")
+- Street names or locations that look misspelled or oddly transcribed
+- Callsigns or local codes not yet in the vocabulary
+
+Return ONLY a JSON object:
+{{"new_terms": ["term1", "term2", ...]}}
+
+Only include high-confidence additions not already in existing vocabulary.
+Return {{"new_terms": []}} if nothing new is found."""
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# Public API
+# ─────────────────────────────────────────────────────────────────────────────
+
+async def bootstrap_system_vocabulary(system_id: str) -> list[str]:
+    """
+    One-shot GPT-4o bootstrap: generate local-knowledge vocabulary for a system.
+    Merges generated terms into system.vocabulary and sets vocabulary_bootstrapped=True.
+    Returns the list of newly generated terms.
+    """
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        logger.warning(f"Vocabulary bootstrap: system {system_id} not found")
+        return []
+
+    system_name = system_doc.get("name", "Unknown")
+    system_type = system_doc.get("type", "P25")
+
+    # Build area hint from configured talkgroup names
+    talkgroups = system_doc.get("config", {}).get("talkgroups", [])
+    tg_names = [tg.get("name", "") for tg in talkgroups if tg.get("name")][:8]
+    area_hint = f"Talkgroups include: {', '.join(tg_names)}" if tg_names else "Unknown area"
+
+    terms = await asyncio.to_thread(_sync_bootstrap, system_name, system_type, area_hint)
+    if not terms:
+        return []
+
+    existing = system_doc.get("vocabulary") or []
+    existing_lower = {t.lower() for t in existing}
+    to_add = [t for t in terms if t.lower() not in existing_lower]
+    merged = list(dict.fromkeys(existing + to_add))
+
+    await fstore.doc_set("systems", system_id, {
+        "vocabulary": merged,
+        "vocabulary_bootstrapped": True,
+    })
+    logger.info(
+        f"Vocabulary bootstrap: {len(to_add)} term(s) generated for system {system_id} "
+        f"({system_name})"
+    )
+    return to_add
+
+
+async def learn_from_correction(system_id: str, original: str, corrected: str) -> None:
+    """
+    Diff original and corrected transcripts; append new tokens to the approved vocabulary.
+    Called automatically when an admin saves a transcript correction.
+    """
+    if not system_id or not original or not corrected:
+        return
+
+    new_terms = _diff_new_terms(original, corrected)
+    if not new_terms:
+        return
+
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        return
+
+    existing = system_doc.get("vocabulary") or []
+    existing_lower = {t.lower() for t in existing}
+    to_add = [t for t in new_terms if t.lower() not in existing_lower]
+    if not to_add:
+        return
+
+    merged = list(dict.fromkeys(existing + to_add))
+    await fstore.doc_set("systems", system_id, {"vocabulary": merged})
+    logger.info(
+        f"Vocabulary: learned {len(to_add)} term(s) from correction on system {system_id}: "
+        f"{to_add}"
+    )
+
+
+async def approve_pending_term(system_id: str, term: str) -> None:
+    """Move a pending term into the approved vocabulary."""
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        return
+    pending = [p for p in (system_doc.get("vocabulary_pending") or []) if p["term"] != term]
+    vocab = system_doc.get("vocabulary") or []
+    if term.lower() not in {t.lower() for t in vocab}:
+        vocab = list(dict.fromkeys(vocab + [term]))
+    await fstore.doc_set("systems", system_id, {
+        "vocabulary": vocab,
+        "vocabulary_pending": pending,
+    })
+
+
+async def dismiss_pending_term(system_id: str, term: str) -> None:
+    """Remove a pending term without adding it to vocabulary."""
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        return
+    pending = [p for p in (system_doc.get("vocabulary_pending") or []) if p["term"] != term]
+    await fstore.doc_set("systems", system_id, {"vocabulary_pending": pending})
+
+
+async def add_term(system_id: str, term: str) -> None:
+    """Manually add a term to the approved vocabulary."""
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        return
+    vocab = system_doc.get("vocabulary") or []
+    if term.lower() not in {t.lower() for t in vocab}:
+        vocab = list(dict.fromkeys(vocab + [term.strip()]))
+        await fstore.doc_set("systems", system_id, {"vocabulary": vocab})
+
+
+async def remove_term(system_id: str, term: str) -> None:
+    """Remove a term from the approved vocabulary."""
+    system_doc = await fstore.doc_get("systems", system_id)
+    if not system_doc:
+        return
+    vocab = [t for t in (system_doc.get("vocabulary") or []) if t.lower() != term.lower()]
+    await fstore.doc_set("systems", system_id, {"vocabulary": vocab})
+
+
+async def get_vocabulary(system_id: str) -> dict:
+    """Return vocabulary and pending terms for a system."""
+    doc = await fstore.doc_get("systems", system_id)
+    if not doc:
+        return {"vocabulary": [], "vocabulary_pending": [], "vocabulary_bootstrapped": False}
+    return {
+        "vocabulary":             doc.get("vocabulary") or [],
+        "vocabulary_pending":     doc.get("vocabulary_pending") or [],
+        "vocabulary_bootstrapped": doc.get("vocabulary_bootstrapped", False),
+    }
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# Prompt-injection helpers (called by transcription.py and intelligence.py)
+# ─────────────────────────────────────────────────────────────────────────────
+
+def build_whisper_vocab_prompt(vocabulary: list[str]) -> str:
+    """
+    Format vocabulary for Whisper prompt injection.
+    Whisper's prompt field acts as a context prior with a ~224-token limit.
+    The base _WHISPER_PROMPT uses ~70 tokens; we budget ~150 tokens (≈550 chars) here.
+    """
+    if not vocabulary:
+        return ""
+    char_budget = 550
+    terms: list[str] = []
+    used = 0
+    for term in vocabulary:
+        cost = len(term) + 2  # ", "
+        if used + cost > char_budget:
+            break
+        terms.append(term)
+        used += cost
+    return ", ".join(terms) + ". " if terms else ""
+
+
+def build_gpt_vocab_block(vocabulary: list[str]) -> str:
+    """Format vocabulary for injection into GPT extraction prompts."""
+    if not vocabulary:
+        return ""
+    return f"Known local terms: {', '.join(vocabulary)}\n"
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# Background induction loop
+# ─────────────────────────────────────────────────────────────────────────────
+
+async def vocabulary_induction_loop() -> None:
+    interval = settings.vocabulary_induction_interval_hours * 3600
+    logger.info(
+        f"Vocabulary induction loop started — "
+        f"interval: {settings.vocabulary_induction_interval_hours}h, "
+        f"sample budget: {settings.vocabulary_induction_sample_tokens} tokens"
+    )
+    while True:
+        await asyncio.sleep(interval)
+        try:
+            await _run_induction_pass()
+        except Exception as e:
+            logger.error(f"Vocabulary induction pass failed: {e}")
+
+
+async def _run_induction_pass() -> None:
+    systems = await fstore.collection_list("systems")
+    if not systems:
+        return
+    logger.info(f"Vocabulary induction: processing {len(systems)} system(s)")
+    for system in systems:
+        system_id = system.get("system_id")
+        if system_id:
+            try:
+                await _induct_system(system_id, system)
+            except Exception as e:
+                logger.warning(f"Induction failed for system {system_id}: {e}")
+
+
+async def _induct_system(system_id: str, system_doc: dict) -> None:
+    """Sample random transcripts for a system and propose new vocabulary."""
+    system_name   = system_doc.get("name", "Unknown")
+    existing_vocab: list[str] = system_doc.get("vocabulary") or []
+
+    # Fetch recent ended calls for this system
+    all_calls = await fstore.collection_list("calls", system_id=system_id, status="ended")
+    if not all_calls:
+        return
+
+    # Random sample up to the token budget (4 chars ≈ 1 token)
+    random.shuffle(all_calls)
+    char_budget = settings.vocabulary_induction_sample_tokens * 4
+    transcript_block = ""
+    sampled = 0
+    for call in all_calls:
+        text = call.get("transcript_corrected") or call.get("transcript") or ""
+        if not text:
+            continue
+        if len(transcript_block) + len(text) > char_budget:
+            break
+        tg = call.get("talkgroup_name") or f"TGID {call.get('talkgroup_id', '?')}"
+        transcript_block += f"[{tg}] {text}\n"
+        sampled += 1
+
+    if sampled < 3:
+        return  # not enough data to learn from yet
+
+    new_terms = await asyncio.to_thread(
+        _sync_induct, system_name, existing_vocab, transcript_block
+    )
+    if not new_terms:
+        return
+
+    now = datetime.now(timezone.utc).isoformat()
+    existing_pending: list[dict] = system_doc.get("vocabulary_pending") or []
+    pending_lower = {p["term"].lower() for p in existing_pending}
+    vocab_lower   = {t.lower() for t in existing_vocab}
+
+    to_queue = [
+        {"term": t, "source": "induction", "added_at": now}
+        for t in new_terms
+        if t.lower() not in vocab_lower and t.lower() not in pending_lower
+    ]
+    if not to_queue:
+        return
+
+    await fstore.doc_set("systems", system_id, {
+        "vocabulary_pending": existing_pending + to_queue,
+    })
+    logger.info(
+        f"Vocabulary induction: {len(to_queue)} new term(s) proposed for "
+        f"system {system_id} ({system_name}): {[p['term'] for p in to_queue]}"
+    )
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# Internal sync helpers
+# ─────────────────────────────────────────────────────────────────────────────
+
+_STOP_WORDS = {
+    "the", "and", "for", "are", "was", "were", "this", "that", "with",
+    "have", "has", "had", "but", "not", "from", "they", "will", "what",
+    "can", "all", "been", "one", "two", "three", "four", "five", "six",
+    "you", "out", "who", "get", "her", "him", "his", "its", "our", "my",
+    "via", "per", "any", "now", "got", "she", "let", "did", "may", "yes",
+    "sir", "say", "see", "too", "off", "how", "put", "set", "try", "back",
+    "just", "like", "into", "than", "them", "then", "some", "also", "onto",
+    "went", "over", "copy", "okay", "unit", "post", "road", "lane", "going",
+    "being", "doing", "there", "their", "about", "would", "could", "should",
+    "route", "north", "south", "east", "west", "avenue", "street", "drive",
+}
+
+
+def _diff_new_terms(original: str, corrected: str) -> list[str]:
+    """
+    Token-level diff: find tokens in `corrected` that replaced or were inserted
+    relative to `original`. These are the admin's intended spellings — good
+    candidates for vocabulary.
+    """
+    orig_tokens = original.split()
+    corr_tokens = corrected.split()
+
+    matcher = difflib.SequenceMatcher(None,
+        [t.lower() for t in orig_tokens],
+        [t.lower() for t in corr_tokens],
+    )
+    new_terms: list[str] = []
+    for tag, _i1, _i2, j1, j2 in matcher.get_opcodes():
+        if tag in ("insert", "replace"):
+            for tok in corr_tokens[j1:j2]:
+                clean = tok.strip(".,!?;:()'\"").strip("-")
+                if len(clean) >= 3 and clean.lower() not in _STOP_WORDS:
+                    new_terms.append(clean)
+
+    return list(dict.fromkeys(new_terms))
+
+
+def _sync_bootstrap(system_name: str, system_type: str, area_hint: str) -> list[str]:
+    from app.config import settings as cfg
+    from openai import OpenAI
+
+    if not cfg.openai_api_key:
+        return []
+
+    prompt = _BOOTSTRAP_PROMPT.format(
+        system_name=system_name,
+        system_type=system_type,
+        area_hint=area_hint,
+    )
+    try:
+        client = OpenAI(api_key=cfg.openai_api_key)
+        response = client.chat.completions.create(
+            model="gpt-4o",
+            messages=[{"role": "user", "content": prompt}],
+            response_format={"type": "json_object"},
+        )
+        data = json.loads(response.choices[0].message.content)
+        terms = data.get("vocabulary") or []
+        return [str(t).strip() for t in terms if str(t).strip()]
+    except Exception as e:
+        logger.warning(f"Vocabulary bootstrap GPT call failed: {e}")
+        return []
+
+
+def _sync_induct(
+    system_name: str, existing_vocab: list[str], transcript_block: str
+) -> list[str]:
+    from app.config import settings as cfg
+    from openai import OpenAI
+
+    if not cfg.openai_api_key:
+        return []
+
+    vocab_str = ", ".join(existing_vocab[:80]) if existing_vocab else "(none yet)"
+    prompt = _INDUCTION_PROMPT.format(
+        system_name=system_name,
+        existing_vocab=vocab_str,
+        transcript_block=transcript_block[:8000],
+    )
+    try:
+        client = OpenAI(api_key=cfg.openai_api_key)
+        response = client.chat.completions.create(
+            model="gpt-4o-mini",
+            messages=[{"role": "user", "content": prompt}],
+            response_format={"type": "json_object"},
+        )
+        data = json.loads(response.choices[0].message.content)
+        terms = data.get("new_terms") or []
+        return [str(t).strip() for t in terms if str(t).strip()]
+    except Exception as e:
+        logger.warning(f"Vocabulary induction GPT call failed: {e}")
+        return []

drb-c2-core/app/main.py

@@ -6,6 +6,8 @@ from app.internal.logger import logger
 from app.internal.mqtt_handler import mqtt_handler
 from app.internal.node_sweeper import sweeper_loop
 from app.internal.summarizer import summarizer_loop
+from app.internal.vocabulary_learner import vocabulary_induction_loop
+from app.internal.recorrelation_sweep import recorrelation_loop
 from app.config import settings
 from app.internal.auth import require_firebase_token, require_service_or_firebase_token
 from app.routers import nodes, systems, calls, upload, tokens, incidents, alerts
@@ -35,14 +37,18 @@ async def lifespan(app: FastAPI):
     await _release_orphaned_tokens()
 
     await mqtt_handler.connect()
-    sweeper_task = asyncio.create_task(sweeper_loop())
+    sweeper_task      = asyncio.create_task(sweeper_loop())
-    summarizer_task = asyncio.create_task(summarizer_loop())
+    summarizer_task   = asyncio.create_task(summarizer_loop())
+    induction_task    = asyncio.create_task(vocabulary_induction_loop())
+    recorrelation_task = asyncio.create_task(recorrelation_loop())
 
     yield  # --- app running ---
 
     logger.info("DRB C2 Core shutting down.")
     sweeper_task.cancel()
     summarizer_task.cancel()
+    induction_task.cancel()
+    recorrelation_task.cancel()
     await mqtt_handler.disconnect()
 
 

drb-c2-core/app/routers/calls.py

@@ -83,6 +83,13 @@ async def patch_transcript(
         "embedding": None,
     })
 
+    # Learn from the correction: diff original → corrected and add new tokens to vocabulary
+    system_id = call.get("system_id")
+    original_text = call.get("transcript_corrected") or call.get("transcript") or ""
+    if system_id and original_text:
+        from app.internal.vocabulary_learner import learn_from_correction
+        await learn_from_correction(system_id, original_text, body.transcript)
+
     from app.routers.upload import _run_extraction_pipeline
     background_tasks.add_task(
         _run_extraction_pipeline,

drb-c2-core/app/routers/systems.py

@@ -1,11 +1,17 @@
 import uuid
 from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+from typing import Optional
 from app.models import SystemCreate, SystemRecord
 from app.internal import firestore as fstore
 
 router = APIRouter(prefix="/systems", tags=["systems"])
 
 
+class VocabularyTermBody(BaseModel):
+    term: str
+
+
 @router.get("")
 async def list_systems():
     return await fstore.collection_list("systems")
@@ -42,3 +48,70 @@ async def delete_system(system_id: str):
     if not existing:
         raise HTTPException(404, f"System '{system_id}' not found.")
     await fstore.doc_delete("systems", system_id)
+
+
+# ── Vocabulary endpoints ───────────────────────────────────────────────────────
+
+@router.get("/{system_id}/vocabulary")
+async def get_vocabulary(system_id: str):
+    """Return approved vocabulary and pending induction suggestions."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import get_vocabulary as _get
+    return await _get(system_id)
+
+
+@router.post("/{system_id}/vocabulary/bootstrap", status_code=202)
+async def bootstrap_vocabulary(system_id: str):
+    """Trigger a one-shot GPT-4o bootstrap to seed the vocabulary from local knowledge."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import bootstrap_system_vocabulary
+    terms = await bootstrap_system_vocabulary(system_id)
+    return {"added": len(terms), "terms": terms}
+
+
+@router.post("/{system_id}/vocabulary/terms")
+async def add_vocabulary_term(system_id: str, body: VocabularyTermBody):
+    """Manually add a term to the approved vocabulary."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import add_term
+    await add_term(system_id, body.term.strip())
+    return {"ok": True}
+
+
+@router.delete("/{system_id}/vocabulary/terms")
+async def remove_vocabulary_term(system_id: str, body: VocabularyTermBody):
+    """Remove a term from the approved vocabulary."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import remove_term
+    await remove_term(system_id, body.term)
+    return {"ok": True}
+
+
+@router.post("/{system_id}/vocabulary/pending/approve")
+async def approve_pending(system_id: str, body: VocabularyTermBody):
+    """Move a pending induction suggestion into the approved vocabulary."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import approve_pending_term
+    await approve_pending_term(system_id, body.term)
+    return {"ok": True}
+
+
+@router.post("/{system_id}/vocabulary/pending/dismiss")
+async def dismiss_pending(system_id: str, body: VocabularyTermBody):
+    """Dismiss a pending induction suggestion without adding it."""
+    existing = await fstore.doc_get("systems", system_id)
+    if not existing:
+        raise HTTPException(404, f"System '{system_id}' not found.")
+    from app.internal.vocabulary_learner import dismiss_pending_term
+    await dismiss_pending_term(system_id, body.term)
+    return {"ok": True}

drb-c2-core/app/routers/upload.py

@@ -151,7 +151,9 @@ async def _run_intelligence_pipeline(
 
     # Step 1: Transcription
     if gcs_uri:
-        transcript, segments = await transcription.transcribe_call(call_id, gcs_uri, talkgroup_name)
+        transcript, segments = await transcription.transcribe_call(
+            call_id, gcs_uri, talkgroup_name, system_id=system_id
+        )
 
     # Step 2: Intelligence extraction
     tags: list[str] = []

drb-frontend/app/systems/page.tsx

@@ -3,7 +3,7 @@
 import { useState } from "react";
 import { useSystems } from "@/lib/useSystems";
 import { c2api } from "@/lib/c2api";
-import type { SystemRecord } from "@/lib/types";
+import type { SystemRecord, VocabularyPendingTerm } from "@/lib/types";
 
 // ── P25 structured config types ──────────────────────────────────────────────
 
@@ -433,6 +433,189 @@ function SystemForm({
   );
 }
 
+// ── Vocabulary panel ──────────────────────────────────────────────────────────
+
+function VocabularyPanel({ systemId }: { systemId: string }) {
+  const [vocab, setVocab]           = useState<string[] | null>(null);
+  const [pending, setPending]       = useState<VocabularyPendingTerm[]>([]);
+  const [bootstrapped, setBootstrapped] = useState(false);
+  const [loading, setLoading]       = useState(false);
+  const [bootstrapping, setBootstrapping] = useState(false);
+  const [newTerm, setNewTerm]       = useState("");
+  const [adding, setAdding]         = useState(false);
+  const [open, setOpen]             = useState(false);
+
+  async function load() {
+    if (vocab !== null) return; // already loaded
+    setLoading(true);
+    try {
+      const data = await c2api.getVocabulary(systemId);
+      setVocab(data.vocabulary);
+      setPending(data.vocabulary_pending);
+      setBootstrapped(data.vocabulary_bootstrapped);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  function toggle() {
+    if (!open) load();
+    setOpen((v) => !v);
+  }
+
+  async function handleBootstrap() {
+    setBootstrapping(true);
+    try {
+      const result = await c2api.bootstrapVocabulary(systemId);
+      const data   = await c2api.getVocabulary(systemId);
+      setVocab(data.vocabulary);
+      setPending(data.vocabulary_pending);
+      setBootstrapped(true);
+      alert(`Bootstrap added ${result.added} term(s).`);
+    } finally {
+      setBootstrapping(false);
+    }
+  }
+
+  async function handleAdd(e: React.FormEvent) {
+    e.preventDefault();
+    const term = newTerm.trim();
+    if (!term) return;
+    setAdding(true);
+    try {
+      await c2api.addVocabularyTerm(systemId, term);
+      setVocab((v) => (v ? [...v, term] : [term]));
+      setNewTerm("");
+    } finally {
+      setAdding(false);
+    }
+  }
+
+  async function handleRemove(term: string) {
+    await c2api.removeVocabularyTerm(systemId, term);
+    setVocab((v) => (v ?? []).filter((t) => t !== term));
+  }
+
+  async function handleApprove(term: string) {
+    await c2api.approvePendingTerm(systemId, term);
+    setVocab((v) => (v ? [...v, term] : [term]));
+    setPending((p) => p.filter((t) => t.term !== term));
+  }
+
+  async function handleDismiss(term: string) {
+    await c2api.dismissPendingTerm(systemId, term);
+    setPending((p) => p.filter((t) => t.term !== term));
+  }
+
+  return (
+    <div className="mt-3 border-t border-gray-800 pt-3">
+      <button
+        onClick={toggle}
+        className="text-xs text-gray-500 hover:text-gray-300 font-mono transition-colors flex items-center gap-1"
+      >
+        <span>{open ? "▲" : "▼"}</span>
+        <span>
+          Vocabulary
+          {vocab !== null && <span className="text-gray-600 ml-1">({vocab.length} terms{pending.length > 0 ? `, ${pending.length} pending` : ""})</span>}
+        </span>
+      </button>
+
+      {open && (
+        <div className="mt-3 space-y-3 font-mono text-xs">
+          {loading && <p className="text-gray-600 italic">Loading…</p>}
+
+          {!loading && vocab !== null && (
+            <>
+              {/* Bootstrap button */}
+              <div className="flex items-center gap-3">
+                <button
+                  onClick={handleBootstrap}
+                  disabled={bootstrapping}
+                  className="bg-indigo-800 hover:bg-indigo-700 disabled:opacity-50 text-indigo-200 px-3 py-1.5 rounded-lg text-xs transition-colors"
+                >
+                  {bootstrapping ? "Bootstrapping…" : bootstrapped ? "Re-bootstrap with AI" : "Bootstrap with AI"}
+                </button>
+                <span className="text-gray-600">GPT-4o generates local knowledge (agencies, units, streets)</span>
+              </div>
+
+              {/* Approved vocabulary chips */}
+              <div>
+                <p className="text-gray-500 uppercase tracking-wider mb-1.5">Approved ({vocab.length})</p>
+                {vocab.length > 0 ? (
+                  <div className="flex flex-wrap gap-1.5">
+                    {vocab.map((term) => (
+                      <span
+                        key={term}
+                        className="inline-flex items-center gap-1 bg-gray-800 text-gray-300 px-2 py-0.5 rounded-full"
+                      >
+                        {term}
+                        <button
+                          onClick={() => handleRemove(term)}
+                          className="text-gray-600 hover:text-red-400 transition-colors leading-none"
+                        >
+                          ×
+                        </button>
+                      </span>
+                    ))}
+                  </div>
+                ) : (
+                  <p className="text-gray-600 italic">No terms yet — bootstrap or add manually.</p>
+                )}
+              </div>
+
+              {/* Add term */}
+              <form onSubmit={handleAdd} className="flex gap-2">
+                <input
+                  value={newTerm}
+                  onChange={(e) => setNewTerm(e.target.value)}
+                  placeholder="Add term (e.g. 5-baker, YVAC)"
+                  className="flex-1 bg-gray-800 border border-gray-700 rounded-lg px-3 py-1.5 text-white text-xs font-mono focus:outline-none focus:border-indigo-500"
+                />
+                <button
+                  type="submit"
+                  disabled={adding || !newTerm.trim()}
+                  className="bg-gray-700 hover:bg-gray-600 disabled:opacity-50 text-gray-200 px-3 py-1.5 rounded-lg transition-colors"
+                >
+                  Add
+                </button>
+              </form>
+
+              {/* Pending induction suggestions */}
+              {pending.length > 0 && (
+                <div>
+                  <p className="text-gray-500 uppercase tracking-wider mb-1.5">
+                    Induction suggestions ({pending.length})
+                  </p>
+                  <div className="space-y-1">
+                    {pending.map((p) => (
+                      <div key={p.term} className="flex items-center gap-2">
+                        <span className="text-gray-300 flex-1">{p.term}</span>
+                        <span className="text-gray-600">{p.source}</span>
+                        <button
+                          onClick={() => handleApprove(p.term)}
+                          className="text-green-500 hover:text-green-400 transition-colors px-1"
+                        >
+                          ✓
+                        </button>
+                        <button
+                          onClick={() => handleDismiss(p.term)}
+                          className="text-gray-600 hover:text-red-400 transition-colors px-1"
+                        >
+                          ✕
+                        </button>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
+
 // ── Systems list page ─────────────────────────────────────────────────────────
 
 export default function SystemsPage() {
@@ -509,6 +692,7 @@ export default function SystemsPage() {
                     Delete
                   </button>
                 </div>
+                <VocabularyPanel systemId={s.system_id} />
               </div>
             );
           })}

drb-frontend/lib/c2api.ts

@@ -93,4 +93,20 @@ export const c2api = {
   // Node key management
   reissueNodeKey: (nodeId: string) =>
     request(`/nodes/${nodeId}/reissue-key`, { method: "POST" }),
+
+  // Vocabulary
+  getVocabulary: (systemId: string) =>
+    request<{ vocabulary: string[]; vocabulary_pending: { term: string; source: string; added_at: string }[]; vocabulary_bootstrapped: boolean }>(
+      `/systems/${systemId}/vocabulary`
+    ),
+  bootstrapVocabulary: (systemId: string) =>
+    request<{ added: number; terms: string[] }>(`/systems/${systemId}/vocabulary/bootstrap`, { method: "POST" }),
+  addVocabularyTerm: (systemId: string, term: string) =>
+    request(`/systems/${systemId}/vocabulary/terms`, { method: "POST", body: JSON.stringify({ term }) }),
+  removeVocabularyTerm: (systemId: string, term: string) =>
+    request(`/systems/${systemId}/vocabulary/terms`, { method: "DELETE", body: JSON.stringify({ term }) }),
+  approvePendingTerm: (systemId: string, term: string) =>
+    request(`/systems/${systemId}/vocabulary/pending/approve`, { method: "POST", body: JSON.stringify({ term }) }),
+  dismissPendingTerm: (systemId: string, term: string) =>
+    request(`/systems/${systemId}/vocabulary/pending/dismiss`, { method: "POST", body: JSON.stringify({ term }) }),
 };

drb-frontend/lib/types.ts

@@ -13,11 +13,20 @@ export interface NodeRecord {
   approval_status: ApprovalStatus | null;
 }
 
+export interface VocabularyPendingTerm {
+  term: string;
+  source: "induction" | "correction";
+  added_at: string;
+}
+
 export interface SystemRecord {
   system_id: string;
   name: string;
   type: string; // P25 | DMR | NBFM
   config: Record<string, unknown>;
+  vocabulary?: string[];
+  vocabulary_pending?: VocabularyPendingTerm[];
+  vocabulary_bootstrapped?: boolean;
 }
 
 export interface TranscriptSegment {