Add campaign layer, GPU model caching, file browser cleanup

- Campaigns: new table, CRUD API, React context + provider
- Sessions: scoped to campaigns, paths under campaigns/{id}/
- File browser: scoped per campaign, removed copy/paste/autoPlay
- Sidebar: campaign selector dropdown at top
- Transcribe: GPU model cached/released via job counter
- Jobs: status text updates dynamically in real-time
- Auto-redirect: blocked when summarize job is active

backend/app/config.py

@@ -14,6 +14,20 @@ TRANSCRIPT_DIR = DATA_DIR / "transcriptions"
 NOTES_DIR = DATA_DIR / "notes"
 DB_PATH = DATA_DIR / "app.db"
 
+CAMPAIGNS_DIR = DATA_DIR / "campaigns"
+
+def campaign_dir(campaign_id: str) -> Path:
+    return CAMPAIGNS_DIR / campaign_id
+
+def campaign_audio_dir(campaign_id: str) -> Path:
+    return campaign_dir(campaign_id) / "audio"
+
+def campaign_transcript_dir(campaign_id: str) -> Path:
+    return campaign_dir(campaign_id) / "transcriptions"
+
+def campaign_notes_dir(campaign_id: str) -> Path:
+    return campaign_dir(campaign_id) / "notes"
+
 for d in (UPLOAD_DIR, AUDIO_DIR, TRANSCRIPT_DIR, NOTES_DIR):
     d.mkdir(parents=True, exist_ok=True)
 

backend/app/database.py

@@ -86,6 +86,26 @@ def init_db():
                 updated_at REAL NOT NULL
             )
         """)
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS campaigns (
+                id TEXT PRIMARY KEY,
+                name TEXT NOT NULL,
+                description TEXT NOT NULL DEFAULT '',
+                created_at REAL NOT NULL
+            )
+        """)
+        try:
+            conn.execute("ALTER TABLE sessions ADD COLUMN campaign_id TEXT REFERENCES campaigns(id) ON DELETE SET NULL")
+        except Exception:
+            pass
+        default = conn.execute("SELECT id FROM campaigns WHERE id = 'default'").fetchone()
+        if not default:
+            conn.execute(
+                "INSERT INTO campaigns (id, name, description, created_at) VALUES (?, ?, '', ?)",
+                ("default", "Default Campaign", now()),
+            )
+            conn.execute("UPDATE sessions SET campaign_id = 'default' WHERE campaign_id IS NULL")
+
         # seed defaults if empty
         existing = {r["key"] for r in conn.execute("SELECT key FROM settings")}
         for k, v in config.DEFAULT_SETTINGS.items():
@@ -140,3 +160,47 @@ def update_job(job_id: str, **fields):
 def get_job(job_id: str) -> dict | None:
     row = get_conn().execute("SELECT * FROM jobs WHERE id = ?", (job_id,)).fetchone()
     return dict(row) if row else None
+
+def create_campaign(name: str, description: str = "") -> dict:
+    campaign_id = new_id()
+    with tx() as conn:
+        conn.execute(
+            "INSERT INTO campaigns (id, name, description, created_at) VALUES (?, ?, ?, ?)",
+            (campaign_id, name, description, now()),
+        )
+    from .config import campaign_audio_dir, campaign_transcript_dir, campaign_notes_dir
+    campaign_audio_dir(campaign_id).mkdir(parents=True, exist_ok=True)
+    campaign_transcript_dir(campaign_id).mkdir(parents=True, exist_ok=True)
+    campaign_notes_dir(campaign_id).mkdir(parents=True, exist_ok=True)
+    return get_campaign(campaign_id)
+
+def list_campaigns() -> list[dict]:
+    rows = get_conn().execute(
+        "SELECT c.*, (SELECT COUNT(*) FROM sessions s WHERE s.campaign_id = c.id) as session_count "
+        "FROM campaigns c ORDER BY c.created_at DESC"
+    ).fetchall()
+    return [dict(r) for r in rows]
+
+def get_campaign(campaign_id: str) -> dict | None:
+    row = get_conn().execute(
+        "SELECT c.*, (SELECT COUNT(*) FROM sessions s WHERE s.campaign_id = c.id) as session_count "
+        "FROM campaigns c WHERE c.id = ?", (campaign_id,)
+    ).fetchone()
+    return dict(row) if row else None
+
+def update_campaign(campaign_id: str, name: str | None = None, description: str | None = None) -> dict | None:
+    fields = {}
+    if name is not None: fields["name"] = name
+    if description is not None: fields["description"] = description
+    if not fields:
+        return get_campaign(campaign_id)
+    with tx() as conn:
+        cols = ", ".join(f"{k} = ?" for k in fields)
+        conn.execute(f"UPDATE campaigns SET {cols} WHERE id = ?", (*fields.values(), campaign_id))
+    return get_campaign(campaign_id)
+
+def delete_campaign(campaign_id: str) -> bool:
+    with tx() as conn:
+        conn.execute("UPDATE sessions SET campaign_id = NULL WHERE campaign_id = ?", (campaign_id,))
+        conn.execute("DELETE FROM campaigns WHERE id = ?", (campaign_id,))
+    return True

backend/app/jobs.py

@@ -1,6 +1,11 @@
 """
 Minimal background job runner.
+
+GPU jobs use a shared counter so the Whisper model stays cached between
+back-to-back transcriptions and is only released when no more GPU work
+is queued.
 """
+import threading
 import traceback
 from concurrent.futures import ThreadPoolExecutor
 
@@ -9,10 +14,23 @@ from .errors import PipelineError
 from .logging_config import get_logger
 
 log = get_logger(__name__)
-_executor = ThreadPoolExecutor(max_workers=2)  # transcription is GPU-bound anyway; no benefit to more workers
+_executor = ThreadPoolExecutor(max_workers=1)
+_gpu_jobs_queued = 0
+_gpu_lock = threading.Lock()
 
 
-def submit(job_id: str, fn, *args, **kwargs):
+def _unload_gpu():
+    """Release the cached Whisper model from GPU memory."""
+    from .pipeline.transcribe import unload_models
+    unload_models()
+
+
+def submit(job_id: str, fn, *args, requires_gpu=False, **kwargs):
+    if requires_gpu:
+        with _gpu_lock:
+            global _gpu_jobs_queued
+            _gpu_jobs_queued += 1
+
     def _run():
         log.info("Job %s starting", job_id)
         db.update_job(job_id, status="running", progress="Starting...")
@@ -37,5 +55,13 @@ def submit(job_id: str, fn, *args, **kwargs):
                 error=f"Unexpected error: {e}", error_stage="unknown",
                 error_detail=traceback.format_exc(),
             )
+        finally:
+            if requires_gpu:
+                with _gpu_lock:
+                    global _gpu_jobs_queued
+                    _gpu_jobs_queued -= 1
+                    if _gpu_jobs_queued <= 0:
+                        log.info("No more GPU jobs queued — unloading Whisper model")
+                        _unload_gpu()
 
     _executor.submit(_run)

backend/app/main.py

@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse, JSONResponse
@@ -14,6 +16,7 @@ from .routers import jobs as jobs_router
 from .routers import models as models_router
 from .routers import diagnostics as diagnostics_router
 from .routers import files as files_router
+from .routers import campaigns as campaigns_router
 
 setup_logging()
 log = get_logger(__name__)
@@ -54,11 +57,15 @@ app.include_router(jobs_router.router)
 app.include_router(models_router.router)
 app.include_router(diagnostics_router.router)
 app.include_router(files_router.router)
+app.include_router(campaigns_router.router)
 
 
 @app.get("/api/sessions/{session_id}/audio")
 def get_audio(session_id: str):
-    audio_path = config.AUDIO_DIR / f"{session_id}.wav"
+    row = db.get_conn().execute("SELECT audio_path FROM sessions WHERE id = ?", (session_id,)).fetchone()
+    if not row or not row["audio_path"]:
+        raise HTTPException(404, "Session not found or audio not available")
+    audio_path = Path(row["audio_path"])
     if not audio_path.exists():
         raise HTTPException(404, "Audio not available for this session")
     return FileResponse(audio_path, media_type="audio/wav")

backend/app/pipeline/transcribe.py

@@ -13,6 +13,53 @@ from ..logging_config import get_logger
 
 log = get_logger(__name__)
 
+# Module-level model cache — kept alive across jobs so back-to-back
+# transcriptions don't reload from disk each time.
+_whisper_model = None
+_whisper_config = {}  # {"model_size": str, "compute_type": str, "device": str}
+
+
+def _get_model(model_size: str, compute_type: str, device: str):
+    global _whisper_model, _whisper_config
+    if (
+        _whisper_model is not None
+        and _whisper_config.get("model_size") == model_size
+        and _whisper_config.get("compute_type") == compute_type
+        and _whisper_config.get("device") == device
+    ):
+        log.info("Reusing cached Whisper model (%s, %s, %s)", model_size, compute_type, device)
+        return _whisper_model
+    log.info("Loading Whisper model (%s, %s, %s)", model_size, compute_type, device)
+    _unload_cached()
+    _whisper_model = whisperx.load_model(model_size, device, compute_type=compute_type)
+    _whisper_config = {"model_size": model_size, "compute_type": compute_type, "device": device}
+    return _whisper_model
+
+
+def _unload_cached():
+    global _whisper_model, _whisper_config
+    if _whisper_model is not None:
+        log.info("Unloading cached Whisper model")
+        del _whisper_model
+        _whisper_model = None
+        _whisper_config = {}
+        gc.collect()
+        if torch.cuda.is_available():
+            torch.cuda.synchronize()
+            torch.cuda.empty_cache()
+            torch.cuda.reset_peak_memory_stats()
+
+
+def unload_models():
+    """Release all GPU memory held by transcription models.
+    Called by the job runner when no more GPU jobs are queued."""
+    _unload_cached()
+    gc.collect()
+    if torch.cuda.is_available():
+        torch.cuda.synchronize()
+        torch.cuda.empty_cache()
+        torch.cuda.reset_peak_memory_stats()
+
 
 def transcribe_and_diarize(
     audio_path: Path,
@@ -33,7 +80,7 @@ def transcribe_and_diarize(
 
     report("Loading transcription model...")
     try:
-        model = whisperx.load_model(model_size, device, compute_type=compute_type)
+        model = _get_model(model_size, compute_type, device)
     except RuntimeError as e:
         if "out of memory" in str(e).lower():
             raise TranscriptionError(
@@ -59,22 +106,21 @@ def transcribe_and_diarize(
         raise TranscriptionError(f"Transcription failed: {e}", cause=e)
     except Exception as e:
         raise TranscriptionError(f"Transcription failed: {e}", cause=e)
-    finally:
-        del model
-        gc.collect()
-        if device == "cuda":
-            torch.cuda.empty_cache()
 
     try:
         report("Aligning...")
         align_model, metadata = whisperx.load_align_model(language_code=result["language"], device=device)
         result = whisperx.align(result["segments"], align_model, metadata, audio, device, return_char_alignments=False)
-        del align_model
+    except Exception as e:
+        raise TranscriptionError(f"Alignment step failed: {e}", cause=e)
+    finally:
+        try:
+            del align_model
+        except NameError:
+            pass
         gc.collect()
         if device == "cuda":
             torch.cuda.empty_cache()
-    except Exception as e:
-        raise TranscriptionError(f"Alignment step failed: {e}", cause=e)
 
     if hf_token:
         try:
@@ -91,6 +137,14 @@ def transcribe_and_diarize(
                     f"your HF token belongs to.\n{msg}", cause=e
                 )
             raise DiarizationError(f"Diarization failed: {msg}", cause=e)
+        finally:
+            try:
+                del diarize_model
+            except NameError:
+                pass
+            gc.collect()
+            if device == "cuda":
+                torch.cuda.empty_cache()
     else:
         report("No HF token set - skipping speaker diarization (all speech will be unattributed)")
 

backend/app/routers/campaigns.py

@@ -0,0 +1,47 @@
+from fastapi import APIRouter, HTTPException
+
+from .. import database as db
+
+router = APIRouter(prefix="/api/campaigns", tags=["campaigns"])
+
+
+@router.get("")
+def list_campaigns():
+    return db.list_campaigns()
+
+
+@router.post("")
+def create_campaign(body: dict):
+    name = body.get("name", "").strip()
+    if not name:
+        raise HTTPException(400, "Name is required")
+    desc = body.get("description", "").strip()
+    return db.create_campaign(name, desc)
+
+
+@router.get("/{campaign_id}")
+def get_campaign(campaign_id: str):
+    campaign = db.get_campaign(campaign_id)
+    if not campaign:
+        raise HTTPException(404, "Campaign not found")
+    return campaign
+
+
+@router.put("/{campaign_id}")
+def update_campaign(campaign_id: str, body: dict):
+    if not db.get_campaign(campaign_id):
+        raise HTTPException(404, "Campaign not found")
+    updated = db.update_campaign(
+        campaign_id,
+        name=body.get("name"),
+        description=body.get("description"),
+    )
+    return updated
+
+
+@router.delete("/{campaign_id}")
+def delete_campaign(campaign_id: str):
+    if not db.get_campaign(campaign_id):
+        raise HTTPException(404, "Campaign not found")
+    db.delete_campaign(campaign_id)
+    return {"ok": True}

backend/app/routers/files.py

@@ -1,4 +1,3 @@
-import shutil
 from pathlib import Path
 
 from fastapi import APIRouter, HTTPException, Request
@@ -11,25 +10,14 @@ router = APIRouter(prefix="/api/files", tags=["files"])
 DATA = config.DATA_DIR.resolve()
 
 
-def _safe_path(path_str: str) -> Path:
+def _safe_path(path_str: str, campaign_id: str | None = None) -> Path:
-    resolved = (DATA / path_str).resolve()
+    root = (config.campaign_dir(campaign_id) if campaign_id else DATA).resolve()
-    if not str(resolved).startswith(str(DATA)):
+    resolved = (root / path_str).resolve()
+    if not str(resolved).startswith(str(root)):
         raise HTTPException(400, "Path traversal denied")
     return resolved
 
 
-def _auto_dest(source: Path) -> Path:
-    parent = source.parent
-    stem = source.stem
-    suffix = source.suffix
-    candidate = parent / f"{stem}_copy{suffix}"
-    n = 2
-    while candidate.exists():
-        candidate = parent / f"{stem}_copy_{n}{suffix}"
-        n += 1
-    return candidate
-
-
 def _auto_name(parent: Path, name: str) -> Path:
     p = parent / name
     if not p.exists():
@@ -53,22 +41,29 @@ def _enrich(entries, conn):
 
 
 @router.get("/browse")
-def browse(path: str = ""):
+def browse(path: str = "", campaign_id: str = None):
     clean = path.strip("/")
     entries = []
     conn = db.get_conn()
+    base = config.campaign_dir(campaign_id) if campaign_id else DATA
 
-    # Root level — show the three directories
     if not clean:
         for name in sorted(["audio", "transcriptions", "notes"]):
             entries.append({"name": name, "type": "dir", "path": name})
         return {"entries": entries, "current_path": "", "parent_path": None}
 
-    # Virtual "notes" directory — list from DB
     if clean == "notes":
-        rows = conn.execute(
+        if campaign_id:
-            "SELECT session_id, dm_notes, player_recap, generated_at FROM notes ORDER BY generated_at DESC"
+            rows = conn.execute(
-        ).fetchall()
+                """SELECT n.session_id, n.dm_notes, n.player_recap, n.generated_at
+                   FROM notes n JOIN sessions s ON n.session_id = s.id
+                   WHERE s.campaign_id = ? ORDER BY n.generated_at DESC""",
+                (campaign_id,),
+            ).fetchall()
+        else:
+            rows = conn.execute(
+                "SELECT session_id, dm_notes, player_recap, generated_at FROM notes ORDER BY generated_at DESC"
+            ).fetchall()
         for r in rows:
             for kind, text in (("player_recap", r["player_recap"]), ("dm_notes", r["dm_notes"])):
                 if not text:
@@ -85,15 +80,16 @@ def browse(path: str = ""):
         _enrich(entries, conn)
         return {"entries": entries, "current_path": "notes", "parent_path": ""}
 
-    # Real directory on disk
+    resolved = (base / clean).resolve()
-    resolved = DATA / clean
+    if not str(resolved).startswith(str(base.resolve())):
+        raise HTTPException(400, "Path traversal denied")
     if not resolved.exists() or not resolved.is_dir():
         raise HTTPException(404, "Directory not found")
 
     for f in sorted(resolved.iterdir(), key=lambda p: (not p.is_dir(), p.name.lower())):
         if f.name.startswith("tmp_"):
             continue
-        rel = str(f.relative_to(DATA))
+        rel = str(f.relative_to(base))
         entry = {"name": f.name, "type": "dir" if f.is_dir() else "file", "path": rel}
         if not f.is_dir():
             entry["size"] = f.stat().st_size
@@ -104,7 +100,7 @@ def browse(path: str = ""):
 
     parts = clean.split("/")
     parent = "/".join(parts[:-1]) if len(parts) > 1 else ""
-    return {"entries": entries, "current_path": clean, "parent_path": parent or None}
+    return {"entries": entries, "current_path": clean, "parent_path": parent}
 
 
 _MIME_MAP: dict[str, str] = {
@@ -120,8 +116,7 @@ _MIME_MAP: dict[str, str] = {
 
 
 @router.get("/view")
-def view_file(path: str):
+def view_file(path: str, campaign_id: str = None):
-    # Virtual notes file — serve from DB
     if path.startswith("notes/"):
         parts = Path(path).stem.split("_")
         session_id = parts[0]
@@ -133,8 +128,7 @@ def view_file(path: str):
         text = row[kind] if kind in ("dm_notes", "player_recap") else (row["player_recap"] or row["dm_notes"] or "")
         return Response(content=text, media_type="text/plain; charset=utf-8", headers={"Content-Disposition": "inline"})
 
-    # Real file on disk
+    file_path = _safe_path(path, campaign_id)
-    file_path = _safe_path(path)
     if not file_path.exists():
         raise HTTPException(404, "File not found")
 
@@ -143,8 +137,8 @@ def view_file(path: str):
 
 
 @router.get("/download")
-def download_file(path: str):
+def download_file(path: str, campaign_id: str = None):
-    file_path = _safe_path(path)
+    file_path = _safe_path(path, campaign_id)
     if not file_path.exists():
         raise HTTPException(404, "File not found")
     return FileResponse(file_path, filename=file_path.name)
@@ -157,23 +151,26 @@ async def upload_file(request: Request):
     if not file_field or not hasattr(file_field, "filename") or not file_field.filename:
         raise HTTPException(400, "No file provided")
     dest_dir_str = form.get("dir", "audio")
-    dest_dir = _safe_path(dest_dir_str)
+    campaign_id = form.get("campaign_id")
+    dest_dir = _safe_path(dest_dir_str, campaign_id)
     dest_dir.mkdir(parents=True, exist_ok=True)
     dest = _auto_name(dest_dir, file_field.filename)
     with open(dest, "wb") as f:
         content = await file_field.read()
         f.write(content)
-    return {"path": str(dest.relative_to(DATA))}
+    root = config.campaign_dir(campaign_id) if campaign_id else DATA
+    return {"path": str(dest.relative_to(root))}
 
 
 @router.delete("")
 def delete_files(body: dict):
     paths = body.get("paths", [])
+    campaign_id = body.get("campaign_id")
     deleted = []
     errors = []
     for p in paths:
         try:
-            fp = _safe_path(p)
+            fp = _safe_path(p, campaign_id)
             if fp.exists():
                 fp.unlink()
                 deleted.append(p)
@@ -195,30 +192,3 @@ def delete_files(body: dict):
         except Exception as e:
             errors.append({"path": p, "error": str(e)})
     return {"deleted": deleted, "errors": errors}
-
-
-@router.post("/copy")
-def copy_file(body: dict):
-    source_str = body.get("source")
-    dest_dir_str = body.get("dest_dir")
-    if not source_str:
-        raise HTTPException(400, "source is required")
-    source = _safe_path(source_str)
-    if not source.exists():
-        raise HTTPException(404, "Source file not found")
-
-    if dest_dir_str:
-        dest_dir = _safe_path(dest_dir_str)
-        dest_dir.mkdir(parents=True, exist_ok=True)
-        dest = _auto_name(dest_dir, source.name)
-    else:
-        dest = _auto_dest(source)
-
-    if dest.exists():
-        raise HTTPException(409, f"Destination already exists: {dest.name}")
-
-    shutil.copy2(source, dest)
-    return {
-        "source": str(source.relative_to(DATA)),
-        "dest": str(dest.relative_to(DATA)),
-    }

backend/app/routers/sessions.py

@@ -38,8 +38,13 @@ def _row_to_dict(row) -> dict:
 
 
 @router.get("")
-def list_sessions():
+def list_sessions(campaign_id: str = None):
-    rows = db.get_conn().execute("SELECT * FROM sessions ORDER BY created_at DESC").fetchall()
+    if campaign_id:
+        rows = db.get_conn().execute(
+            "SELECT * FROM sessions WHERE campaign_id = ? ORDER BY created_at DESC", (campaign_id,)
+        ).fetchall()
+    else:
+        rows = db.get_conn().execute("SELECT * FROM sessions ORDER BY created_at DESC").fetchall()
     sessions = []
     for r in rows:
         s = _row_to_dict(r)
@@ -108,24 +113,38 @@ def _run_transcription(session_id: str, video_path: Path, audio_path: Path, tran
             )
 
     job_id = db.create_job(session_id, "transcribe")
-    jobs.submit(job_id, run)
+    jobs.submit(job_id, run, requires_gpu=True)
     return job_id
 
 
 @router.post("")
-async def create_session(name: str = Form(...), file: UploadFile = File(None), upload_path: str = Form(None)):
+async def create_session(
+    name: str = Form(...),
+    file: UploadFile = File(None),
+    upload_path: str = Form(None),
+    campaign_id: str = Form(None),
+):
     session_id = db.new_id()
 
+    if campaign_id:
+        upload_dir = config.campaign_dir(campaign_id)
+        audio_dir = config.campaign_audio_dir(campaign_id)
+        transcript_dir = config.campaign_transcript_dir(campaign_id)
+    else:
+        upload_dir = config.UPLOAD_DIR
+        audio_dir = config.AUDIO_DIR
+        transcript_dir = config.TRANSCRIPT_DIR
+
     if upload_path:
         src = Path(upload_path)
         if not src.exists():
             raise HTTPException(400, f"Uploaded file not found at {upload_path}")
         safe_filename = os.path.basename(src)
-        video_path = config.UPLOAD_DIR / f"{session_id}_{safe_filename}"
+        video_path = upload_dir / f"{session_id}_{safe_filename}"
         shutil.move(str(src), str(video_path))
     elif file:
         safe_filename = os.path.basename(file.filename or f"{session_id}")
-        video_path = config.UPLOAD_DIR / f"{session_id}_{safe_filename}"
+        video_path = upload_dir / f"{session_id}_{safe_filename}"
         with open(video_path, "wb") as buffer:
             shutil.copyfileobj(file.file, buffer)
     else:
@@ -133,13 +152,13 @@ async def create_session(name: str = Form(...), file: UploadFile = File(None), u
 
     with db.tx() as conn:
         conn.execute(
-            "INSERT INTO sessions (id, name, original_filename, video_path, status, created_at) "
+            "INSERT INTO sessions (id, name, original_filename, video_path, campaign_id, status, created_at) "
-            "VALUES (?, ?, ?, ?, 'uploaded', ?)",
+            "VALUES (?, ?, ?, ?, ?, 'uploaded', ?)",
-            (session_id, name, safe_filename, str(video_path), db.now()),
+            (session_id, name, safe_filename, str(video_path), campaign_id, db.now()),
         )
 
-    audio_path = config.AUDIO_DIR / f"{session_id}.wav"
+    audio_path = audio_dir / f"{session_id}.wav"
-    transcript_path = config.TRANSCRIPT_DIR / f"{session_id}.json"
+    transcript_path = transcript_dir / f"{session_id}.json"
     job_id = _run_transcription(session_id, video_path, audio_path, transcript_path)
 
     return {"session_id": session_id, "job_id": job_id}
@@ -153,8 +172,13 @@ def retry_transcription(session_id: str):
         raise HTTPException(404, "Session not found")
     session = _row_to_dict(row)
     video_path = Path(session["video_path"])
-    audio_path = config.AUDIO_DIR / f"{session_id}.wav"
+    campaign_id = session.get("campaign_id")
-    transcript_path = config.TRANSCRIPT_DIR / f"{session_id}.json"
+    if campaign_id:
+        audio_path = config.campaign_audio_dir(campaign_id) / f"{session_id}.wav"
+        transcript_path = config.campaign_transcript_dir(campaign_id) / f"{session_id}.json"
+    else:
+        audio_path = config.AUDIO_DIR / f"{session_id}.wav"
+        transcript_path = config.TRANSCRIPT_DIR / f"{session_id}.json"
     job_id = _run_transcription(session_id, video_path, audio_path, transcript_path)
     return {"job_id": job_id}
 

frontend/src/App.tsx

@@ -8,6 +8,8 @@ import Notes from './pages/Notes';
 import Files from './pages/Files';
 import Settings from './pages/Settings';
 import Diagnostics from './pages/Diagnostics';
+import Campaigns from './pages/Campaigns';
+import Layout from './components/Layout';
 import { api } from './api';
 
 function App() {
@@ -41,8 +43,9 @@ function App() {
 
       {/* If configured, serve the main sessions workspace */}
       {isConfigured ? (
-        <>
+        <Route element={<Layout />}>
           <Route path="/" element={<Sessions />} />
+          <Route path="/campaigns" element={<Campaigns />} />
           <Route path="/sessions/:id" element={<SessionDetail />} />
           <Route path="/sessions/:id/speakers" element={<Speakers />} />
           <Route path="/sessions/:id/notes" element={<Notes />} />
@@ -50,7 +53,7 @@ function App() {
           <Route path="/settings" element={<Settings />} />
           <Route path="/diagnostics" element={<Diagnostics />} />
           <Route path="*" element={<Navigate to="/" />} />
-        </>
+        </Route>
       ) : (
         <Route path="*" element={<Navigate to="/setup" />} />
       )}

frontend/src/api.ts

@@ -36,6 +36,14 @@ export interface Job {
   updated_at: number;
 }
 
+export interface Campaign {
+  id: string;
+  name: string;
+  description: string;
+  created_at: number;
+  session_count: number;
+}
+
 export type DeleteStrategy = 'all' | 'artifacts_only' | 'none';
 
 export const jobApi = {
@@ -55,6 +63,41 @@ export const jobApi = {
   },
 };
 
+export const campaignApi = {
+  list: async (): Promise<Campaign[]> => {
+    const res = await fetch(`${BASE_URL}/campaigns`);
+    if (!res.ok) throw new Error('Failed to list campaigns');
+    return res.json();
+  },
+  create: async (name: string, description?: string): Promise<Campaign> => {
+    const res = await fetch(`${BASE_URL}/campaigns`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ name, description }),
+    });
+    if (!res.ok) throw new Error('Failed to create campaign');
+    return res.json();
+  },
+  get: async (id: string): Promise<Campaign> => {
+    const res = await fetch(`${BASE_URL}/campaigns/${id}`);
+    if (!res.ok) throw new Error('Failed to get campaign');
+    return res.json();
+  },
+  update: async (id: string, body: Partial<Pick<Campaign, 'name' | 'description'>>): Promise<Campaign> => {
+    const res = await fetch(`${BASE_URL}/campaigns/${id}`, {
+      method: 'PUT',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(body),
+    });
+    if (!res.ok) throw new Error('Failed to update campaign');
+    return res.json();
+  },
+  delete: async (id: string): Promise<void> => {
+    const res = await fetch(`${BASE_URL}/campaigns/${id}`, { method: 'DELETE' });
+    if (!res.ok) throw new Error('Failed to delete campaign');
+  },
+};
+
 export const api = {
   // Settings
   getSettings: async (): Promise<AppSettings> => {
@@ -75,17 +118,19 @@ export const api = {
   },
 
   // Sessions
-  listSessions: async (): Promise<any[]> => {
+  listSessions: async (campaignId?: string): Promise<any[]> => {
-    const res = await fetch(`${BASE_URL}/sessions`);
+    const qs = campaignId ? `?campaign_id=${encodeURIComponent(campaignId)}` : '';
+    const res = await fetch(`${BASE_URL}/sessions${qs}`);
     return res.json();
   },
-  createSession: async (name: string, file: File, onProgress?: (pct: number) => void): Promise<{ session_id: string; job_id: string }> => {
+  createSession: async (name: string, file: File, onProgress?: (pct: number) => void, campaignId?: string): Promise<{ session_id: string; job_id: string }> => {
     const CHUNK_THRESHOLD = 90 * 1024 * 1024;
     if (file.size > CHUNK_THRESHOLD) {
       const result = await api.uploadFileInChunks(file, onProgress || (() => {}));
       const formData = new FormData();
       formData.append('name', name);
       formData.append('upload_path', result.filepath);
+      if (campaignId) formData.append('campaign_id', campaignId);
       const res = await fetch(`${BASE_URL}/sessions`, { method: 'POST', body: formData });
       if (!res.ok) throw new Error('Failed to create session');
       return res.json();
@@ -93,6 +138,7 @@ export const api = {
     const formData = new FormData();
     formData.append('name', name);
     formData.append('file', file);
+    if (campaignId) formData.append('campaign_id', campaignId);
     const res = await fetch(`${BASE_URL}/sessions`, { method: 'POST', body: formData });
     if (!res.ok) throw new Error('Failed to create session');
     return res.json();
@@ -195,34 +241,37 @@ export const api = {
   },
 
   // Files
-  browseFiles: async (path?: string): Promise<{ entries: any[]; current_path: string; parent_path: string | null }> => {
+  browseFiles: async (path?: string, campaignId?: string): Promise<{ entries: any[]; current_path: string; parent_path: string | null }> => {
-    const qs = path ? `?path=${encodeURIComponent(path)}` : '';
+    const params = new URLSearchParams();
-    const res = await fetch(`${BASE_URL}/files/browse${qs}`);
+    if (path) params.set('path', path);
+    if (campaignId) params.set('campaign_id', campaignId);
+    const qs = params.toString();
+    const res = await fetch(`${BASE_URL}/files/browse${qs ? `?${qs}` : ''}`);
     if (!res.ok) throw new Error('Failed to browse files');
     return res.json();
   },
-  deleteFiles: async (paths: string[]): Promise<{ deleted: string[]; errors: any[] }> => {
+  deleteFiles: async (paths: string[], campaignId?: string): Promise<{ deleted: string[]; errors: any[] }> => {
-    const res = await fetch(`${BASE_URL}/files`, { method: 'DELETE', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ paths }) });
+    const res = await fetch(`${BASE_URL}/files`, { method: 'DELETE', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ paths, campaign_id: campaignId }) });
     if (!res.ok) throw new Error('Failed to delete files');
     return res.json();
   },
-  uploadFile: async (file: File, dir?: string): Promise<{ path: string }> => {
+  uploadFile: async (file: File, dir?: string, campaignId?: string): Promise<{ path: string }> => {
     const form = new FormData();
     form.append('file', file);
     if (dir) form.append('dir', dir);
+    if (campaignId) form.append('campaign_id', campaignId);
     const res = await fetch(`${BASE_URL}/files/upload`, { method: 'POST', body: form });
     if (!res.ok) throw new Error('Failed to upload file');
     return res.json();
   },
-  copyFile: async (source: string, dest_dir?: string): Promise<{ source: string; dest: string }> => {
+  downloadFileUrl: (path: string, campaignId?: string): string => {
-    const res = await fetch(`${BASE_URL}/files/copy`, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ source, dest_dir }) });
+    const params = new URLSearchParams({ path });
-    if (!res.ok) throw new Error('Failed to copy file');
+    if (campaignId) params.set('campaign_id', campaignId);
-    return res.json();
+    return `${BASE_URL}/files/download?${params.toString()}`;
   },
-  downloadFileUrl: (path: string): string => {
+  viewFileUrl: (path: string, campaignId?: string): string => {
-    return `${BASE_URL}/files/download?path=${encodeURIComponent(path)}`;
+    const params = new URLSearchParams({ path });
-  },
+    if (campaignId) params.set('campaign_id', campaignId);
-  viewFileUrl: (path: string): string => {
+    return `${BASE_URL}/files/view?${params.toString()}`;
-    return `${BASE_URL}/files/view?path=${encodeURIComponent(path)}`;
   },
 };

frontend/src/components/Layout.tsx

@@ -0,0 +1,16 @@
+import { Outlet } from "react-router-dom";
+import Sidebar from "./Sidebar";
+import { CampaignProvider } from "../contexts/CampaignContext";
+
+export default function Layout() {
+  return (
+    <CampaignProvider>
+      <div className="flex min-h-screen">
+        <Sidebar />
+        <main className="flex-1 ml-60">
+          <Outlet />
+        </main>
+      </div>
+    </CampaignProvider>
+  );
+}

frontend/src/components/Sidebar.tsx

@@ -0,0 +1,95 @@
+import { useState, useRef, useEffect } from "react";
+import { Link, useLocation, useNavigate } from "react-router-dom";
+import { useCampaign } from "../contexts/CampaignContext";
+
+const NAV = [
+  { to: "/", label: "Transcriptions" },
+  { to: "/files", label: "File Browser" },
+  { to: "/settings", label: "Settings" },
+  { to: "/diagnostics", label: "System Check" },
+];
+
+export default function Sidebar() {
+  const { pathname } = useLocation();
+  const { currentCampaign, setCampaign, campaigns } = useCampaign();
+  const [open, setOpen] = useState(false);
+  const ref = useRef<HTMLDivElement>(null);
+  const nav = useNavigate();
+
+  useEffect(() => {
+    const handler = (e: MouseEvent) => {
+      if (ref.current && !ref.current.contains(e.target as Node)) {
+        setOpen(false);
+      }
+    };
+    document.addEventListener("mousedown", handler);
+    return () => document.removeEventListener("mousedown", handler);
+  }, []);
+
+  return (
+    <aside className="fixed left-0 top-0 h-screen w-60 bg-panel border-r border-white/5 flex flex-col z-40">
+      <div className="px-6 pt-8 pb-5 border-b border-white/5">
+        <h1 className="font-display text-xl text-brass tracking-tight">Nat20 Notes</h1>
+      </div>
+
+      {/* Campaign selector */}
+      <div className="px-3 pt-4 pb-3 relative" ref={ref}>
+        <button
+          className="w-full flex items-center justify-between gap-2 px-3 py-2 rounded-md bg-white/5 hover:bg-white/10 transition-colors text-left"
+          onClick={() => setOpen(!open)}
+        >
+          <span className="text-sm font-medium truncate">
+            {currentCampaign?.name ?? "No campaign"}
+          </span>
+          <span className="text-ink/40 text-xs">{open ? "\u25B2" : "\u25BC"}</span>
+        </button>
+        {open && (
+          <div className="absolute left-3 right-3 top-full mt-1 rounded-md bg-panel2 border border-white/10 shadow-xl z-50 overflow-hidden">
+            {campaigns.map((c) => (
+              <button
+                key={c.id}
+                className={`w-full text-left px-3 py-2 text-sm hover:bg-white/5 transition-colors flex items-center justify-between ${
+                  c.id === currentCampaign?.id ? "text-brass" : "text-ink/70"
+                }`}
+                onClick={() => {
+                  setCampaign(c);
+                  setOpen(false);
+                }}
+              >
+                <span className="truncate">{c.name}</span>
+                {c.id === currentCampaign?.id && <span className="text-brass text-xs">\u2713</span>}
+              </button>
+            ))}
+            <div className="border-t border-white/10">
+              <button
+                className="w-full text-left px-3 py-2 text-xs text-ink/50 hover:text-ink hover:bg-white/5 transition-colors"
+                onClick={() => { nav("/campaigns"); setOpen(false); }}
+              >
+                Manage Campaigns
+              </button>
+            </div>
+          </div>
+        )}
+      </div>
+
+      <nav className="flex-1 flex flex-col gap-1 px-3 pt-3">
+        {NAV.map(({ to, label }) => {
+          const active = pathname === to;
+          return (
+            <Link
+              key={to}
+              to={to}
+              className={`flex items-center gap-3 px-3 py-2.5 rounded-md text-sm font-medium transition-colors ${
+                active
+                  ? "bg-brass/10 text-brass"
+                  : "text-ink/50 hover:text-ink hover:bg-white/5"
+              }`}
+            >
+              {label}
+            </Link>
+          );
+        })}
+      </nav>
+    </aside>
+  );
+}

frontend/src/contexts/CampaignContext.tsx

@@ -0,0 +1,59 @@
+import { createContext, useContext, useState, useEffect, useCallback, type ReactNode } from 'react';
+import { campaignApi, type Campaign } from '../api';
+
+interface CampaignContextType {
+  currentCampaign: Campaign | null;
+  setCampaign: (c: Campaign | null) => void;
+  campaigns: Campaign[];
+  refreshCampaigns: () => void;
+}
+
+const CampaignContext = createContext<CampaignContextType | null>(null);
+
+export function CampaignProvider({ children }: { children: ReactNode }) {
+  const [campaigns, setCampaigns] = useState<Campaign[]>([]);
+  const [currentCampaign, setCurrentCampaign] = useState<Campaign | null>(null);
+
+  const refreshCampaigns = useCallback(async () => {
+    try {
+      const list = await campaignApi.list();
+      setCampaigns(list);
+    } catch {}
+  }, []);
+
+  useEffect(() => {
+    refreshCampaigns();
+  }, [refreshCampaigns]);
+
+  useEffect(() => {
+    if (campaigns.length === 0) return;
+    if (!currentCampaign) {
+      const stored = localStorage.getItem('campaignId');
+      const match = stored ? campaigns.find(c => c.id === stored) : null;
+      setCurrentCampaign(match || campaigns[0]);
+    } else {
+      const stillExists = campaigns.find(c => c.id === currentCampaign.id);
+      if (!stillExists) {
+        setCurrentCampaign(campaigns[0] || null);
+      }
+    }
+  }, [campaigns]);
+
+  const setCampaign = (c: Campaign | null) => {
+    if (c) localStorage.setItem('campaignId', c.id);
+    else localStorage.removeItem('campaignId');
+    setCurrentCampaign(c);
+  };
+
+  return (
+    <CampaignContext.Provider value={{ currentCampaign, setCampaign, campaigns, refreshCampaigns }}>
+      {children}
+    </CampaignContext.Provider>
+  );
+}
+
+export function useCampaign() {
+  const ctx = useContext(CampaignContext);
+  if (!ctx) throw new Error('useCampaign must be used within CampaignProvider');
+  return ctx;
+}

frontend/src/pages/Campaigns.tsx

@@ -0,0 +1,120 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { campaignApi, type Campaign } from '../api';
+import { useCampaign } from '../contexts/CampaignContext';
+
+export default function Campaigns() {
+  const [campaigns, setCampaigns] = useState<Campaign[]>([]);
+  const [name, setName] = useState('');
+  const [editingId, setEditingId] = useState<string | null>(null);
+  const [editName, setEditName] = useState('');
+  const nav = useNavigate();
+  const { setCampaign, refreshCampaigns } = useCampaign();
+
+  const load = async () => {
+    const list = await campaignApi.list();
+    setCampaigns(list);
+  };
+
+  useEffect(() => { load(); }, []);
+
+  const create = async () => {
+    if (!name.trim()) return;
+    const c = await campaignApi.create(name.trim());
+    setName('');
+    await load();
+    await refreshCampaigns();
+    setCampaign(c);
+    nav('/');
+  };
+
+  const startEdit = (c: Campaign) => {
+    setEditingId(c.id);
+    setEditName(c.name);
+  };
+
+  const saveEdit = async (id: string) => {
+    if (!editName.trim()) return;
+    await campaignApi.update(id, { name: editName.trim() });
+    setEditingId(null);
+    await load();
+    await refreshCampaigns();
+  };
+
+  const deleteCampaign = async (id: string) => {
+    if (!confirm('Delete this campaign? Sessions will be unlinked (notes/history preserved).')) return;
+    await campaignApi.delete(id);
+    await load();
+    await refreshCampaigns();
+  };
+
+  const select = (c: Campaign) => {
+    setCampaign(c);
+    nav('/');
+  };
+
+  return (
+    <div className="max-w-3xl mx-auto py-16 px-4">
+      <div className="eyebrow mb-2">Nat20 Notes</div>
+      <h1 className="font-display text-4xl mb-8">Campaigns</h1>
+
+      <div className="card p-6 mb-8">
+        <h2 className="font-display text-xl mb-4">New campaign</h2>
+        <div className="flex gap-3">
+          <input
+            className="input flex-1"
+            placeholder="Campaign name"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            onKeyDown={(e) => e.key === 'Enter' && create()}
+          />
+          <button className="btn-primary" disabled={!name.trim()} onClick={create}>
+            Create
+          </button>
+        </div>
+      </div>
+
+      <div className="space-y-3">
+        {campaigns.length === 0 && (
+          <p className="text-ink/40">No campaigns yet — create one above.</p>
+        )}
+        {campaigns.map((c) => (
+          <div key={c.id} className="card p-4 flex items-center justify-between hover:border-brass/40 border border-transparent">
+            <div className="flex-1 min-w-0 cursor-pointer" onClick={() => select(c)}>
+              {editingId === c.id ? (
+                <input
+                  className="input w-full"
+                  value={editName}
+                  onChange={(e) => setEditName(e.target.value)}
+                  onKeyDown={(e) => {
+                    if (e.key === 'Enter') saveEdit(c.id);
+                    if (e.key === 'Escape') setEditingId(null);
+                  }}
+                  onBlur={() => saveEdit(c.id)}
+                  autoFocus
+                  onClick={(e) => e.stopPropagation()}
+                />
+              ) : (
+                <>
+                  <div className="font-medium">{c.name}</div>
+                  <div className="text-xs text-ink/40 mt-0.5">
+                    {c.session_count} session{c.session_count !== 1 ? 's' : ''}
+                    {c.description && ` \u00B7 ${c.description}`}
+                  </div>
+                </>
+              )}
+            </div>
+            <div className="flex gap-2 ml-4 shrink-0">
+              <button className="btn-secondary text-xs px-2 py-1" onClick={(e) => { e.stopPropagation(); startEdit(c); }}>
+                Rename
+              </button>
+              <button className="btn-secondary text-xs px-2 py-1 text-rose-400" onClick={(e) => { e.stopPropagation(); deleteCampaign(c.id); }}>
+                Delete
+              </button>
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}

frontend/src/pages/Diagnostics.tsx

@@ -1,5 +1,4 @@
 import { useEffect, useState } from "react";
-import { Link } from "react-router-dom";
 import { api } from "../api";
 
 const LABELS: Record<string, string> = {
@@ -27,7 +26,6 @@ export default function Diagnostics() {
 
   return (
     <div className="max-w-xl mx-auto py-16 px-4">
-      <Link to="/" className="text-sm text-ink/40 hover:text-brass">&larr; Back</Link>
       <h1 className="font-display text-3xl mt-4 mb-2">System check</h1>
       <p className="text-ink/60 mb-6">Run this before your first session, or any time something isn't working.</p>
 

frontend/src/pages/Files.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useState, useCallback } from "react";
 import { Link } from "react-router-dom";
 import { api } from "../api";
+import { useCampaign } from "../contexts/CampaignContext";
 
 function formatSize(bytes: number): string {
   if (bytes < 1024) return `${bytes} B`;
@@ -47,11 +48,11 @@ function isText(path: string) {
 }
 
 export default function Files() {
+  const { currentCampaign } = useCampaign();
   const [entries, setEntries] = useState<any[]>([]);
   const [currentPath, setCurrentPath] = useState("");
   const [parentPath, setParentPath] = useState<string | null>(null);
   const [selectedPaths, setSelectedPaths] = useState<Set<string>>(new Set());
-  const [copiedFile, setCopiedFile] = useState<{ path: string; name: string } | null>(null);
   const [loading, setLoading] = useState(true);
   const [toast, setToast] = useState<string | null>(null);
   const [uploading, setUploading] = useState(false);
@@ -59,20 +60,22 @@ export default function Files() {
   const [expandedContent, setExpandedContent] = useState<string | null>(null);
   const [expanding, setExpanding] = useState(false);
 
+  const campaignId = currentCampaign?.id;
+
   const load = useCallback(async (path: string) => {
     setLoading(true);
     setExpandedPath(null);
     setExpandedContent(null);
     try {
-      const res = await api.browseFiles(path || undefined);
+      const res = await api.browseFiles(path || undefined, campaignId);
       setEntries(res.entries);
       setCurrentPath(res.current_path);
       setParentPath(res.parent_path);
     } catch { setEntries([]); }
     setLoading(false);
-  }, []);
+  }, [campaignId]);
 
-  useEffect(() => { load(currentPath); }, []);
+  useEffect(() => { load(currentPath); }, [campaignId]);
 
   const navigate = (path: string) => {
     setSelectedPaths(new Set());
@@ -84,23 +87,11 @@ export default function Files() {
     setTimeout(() => setToast(null), 2000);
   };
 
-  // Keyboard shortcuts
+  // Keyboard shortcuts (delete only)
   useEffect(() => {
     const handler = (e: KeyboardEvent) => {
       const tag = (e.target as HTMLElement)?.tagName;
       if (tag === "INPUT" || tag === "TEXTAREA") return;
-
-      if ((e.ctrlKey || e.metaKey) && e.key === "c") {
-        e.preventDefault();
-        if (selectedPaths.size > 0) {
-          const first = entries.find(f => selectedPaths.has(f.path));
-          if (first) { setCopiedFile({ path: first.path, name: first.name }); showToast(`Copied: ${first.name}`); }
-        }
-      }
-      if ((e.ctrlKey || e.metaKey) && e.key === "v") {
-        e.preventDefault();
-        if (copiedFile) handlePaste();
-      }
       if (e.key === "Delete" && selectedPaths.size > 0) handleDelete();
       if ((e.ctrlKey || e.metaKey) && e.key === "a") {
         e.preventDefault();
@@ -109,7 +100,7 @@ export default function Files() {
     };
     window.addEventListener("keydown", handler);
     return () => window.removeEventListener("keydown", handler);
-  }, [selectedPaths, copiedFile, entries]);
+  }, [selectedPaths, entries]);
 
   const toggleSelect = (path: string) => {
     setSelectedPaths(prev => {
@@ -125,7 +116,7 @@ export default function Files() {
     if (paths.length === 0) return;
     if (!confirm(`Delete ${paths.length} item(s)?`)) return;
     try {
-      const res = await api.deleteFiles(paths);
+      const res = await api.deleteFiles(paths, campaignId);
       setSelectedPaths(new Set());
       setExpandedPath(null);
       setExpandedContent(null);
@@ -136,18 +127,6 @@ export default function Files() {
     }
   };
 
-  const handlePaste = async () => {
-    if (!copiedFile) return;
-    try {
-      const res = await api.copyFile(copiedFile.path, currentPath || undefined);
-      setCopiedFile(null);
-      showToast(`Pasted as: ${res.dest.split("/").pop()}`);
-      load(currentPath);
-    } catch (e: any) {
-      showToast(e.message || "Paste failed");
-    }
-  };
-
   const handleUpload = async () => {
     const input = document.createElement("input");
     input.type = "file";
@@ -156,7 +135,7 @@ export default function Files() {
       if (!file) return;
       setUploading(true);
       try {
-        await api.uploadFile(file, currentPath || undefined);
+        await api.uploadFile(file, currentPath || undefined, campaignId);
         showToast("Uploaded");
         load(currentPath);
       } catch (e: any) {
@@ -173,16 +152,16 @@ export default function Files() {
       setExpandedContent(null);
       return;
     }
-    setExpandedPath(entry.path);
+      setExpandedPath(entry.path);
-    if (isAudio(entry.name)) {
+      if (isAudio(entry.name)) {
-      setExpandedContent(null);
+        setExpandedContent(null);
-    } else if (isText(entry.path)) {
+      } else if (isText(entry.path)) {
-      setExpanding(true);
+        setExpanding(true);
-      try {
+        try {
-        const res = await fetch(api.viewFileUrl(entry.path));
+          const res = await fetch(api.viewFileUrl(entry.path, campaignId));
-        const text = await res.text();
+          const text = await res.text();
-        setExpandedContent(text);
+          setExpandedContent(text);
-      } catch {
+        } catch {
         setExpandedContent("(failed to load)");
       }
       setExpanding(false);
@@ -200,7 +179,6 @@ export default function Files() {
           {toast}
         </div>
       )}
-      <Link to="/" className="text-sm text-ink/40 hover:text-brass">&larr; Back</Link>
       <h1 className="font-display text-3xl mt-4 mb-2">File Browser</h1>
 
       <Breadcrumb path={currentPath} onNavigate={navigate} />
@@ -209,30 +187,18 @@ export default function Files() {
       <div className="card p-4 mb-6">
         <div className="flex items-center justify-between flex-wrap gap-3">
           <div className="flex gap-2">
-            <button className="btn-secondary text-sm" onClick={() => navigate(parentPath || "")} disabled={!parentPath}>
+            <button className="btn-secondary text-sm" onClick={() => navigate(parentPath || "")} disabled={parentPath === null}>
               &uarr; Up
             </button>
           </div>
           <div className="flex gap-2 items-center">
-            {copiedFile && (
-              <span className="text-xs text-brass font-mono truncate max-w-[200px]" title={copiedFile.path}>
-                Clipboard: {copiedFile.name}
-              </span>
-            )}
             <button className="btn-secondary text-sm" onClick={handleUpload} disabled={uploading}>
               {uploading ? "Uploading..." : "Upload"}
             </button>
-            <button className="btn-secondary text-sm" onClick={() => {
-              if (selectedPaths.size > 0) {
-                const first = entries.find(f => selectedPaths.has(f.path));
-                if (first) { setCopiedFile({ path: first.path, name: first.name }); showToast(`Copied: ${first.name}`); }
-              }
-            }} disabled={selectedCount === 0}>Copy</button>
-            <button className="btn-secondary text-sm" onClick={handlePaste} disabled={!copiedFile}>Paste</button>
             <button className="btn-secondary text-sm" onClick={handleDelete} disabled={selectedCount === 0}>Delete</button>
             <button className="btn-secondary text-sm" onClick={() => {
               const first = entries.find(f => selectedPaths.has(f.path));
-              if (first) window.open(api.downloadFileUrl(first.path), "_blank");
+              if (first) window.open(api.downloadFileUrl(first.path, campaignId), "_blank");
             }} disabled={selectedCount !== 1}>Download</button>
           </div>
         </div>
@@ -311,7 +277,7 @@ export default function Files() {
                         <td colSpan={6} className="p-0">
                           <div className="bg-black/20 px-4 py-4">
                             {isAudio(e.name) ? (
-                              <audio controls className="w-full max-w-xl" src={api.viewFileUrl(e.path)} autoPlay>
+                              <audio controls className="w-full max-w-xl" src={api.viewFileUrl(e.path, campaignId)}>
                                 Your browser does not support audio playback.
                               </audio>
                             ) : expanding ? (

frontend/src/pages/SessionDetail.tsx

@@ -191,18 +191,21 @@ export default function SessionDetail() {
     return () => link.remove();
   }, [session?.status, id]);
 
-  // Auto-redirect to speakers page once transcription completes
+  // Auto-redirect to speakers page once transcription completes.
+  // Skip if there's an active summarize job (user just came from the speakers
+  // page after starting note generation).
   const autoRedirected = useRef(false);
   useEffect(() => {
     if (session?.status === 'transcribed') {
-      if (!autoRedirected.current) {
+      const hasActiveSummarize = job?.job_type === 'summarize' && ['queued', 'running'].includes(job.status);
+      if (!hasActiveSummarize && !autoRedirected.current) {
         autoRedirected.current = true;
         nav(`/sessions/${id}/speakers`);
       }
     } else {
       autoRedirected.current = false;
     }
-  }, [session?.status, id, nav]);
+  }, [session?.status, id, nav, job]);
 
   const retryTranscription = async () => {
     if (!id) return;
@@ -226,13 +229,17 @@ export default function SessionDetail() {
 
   if (!session) return null;
 
+  const statusText = job && ['queued', 'running'].includes(job.status)
+    ? job.progress || 'Waiting...'
+    : (STATUS_LABEL[session.status] ?? session.status);
+
   return (
     <div className="max-w-2xl mx-auto py-16 px-4">
       {toast && <Toast message={toast} onDone={() => setToast(null)} />}
       <Link to="/" className="text-sm text-ink/40 hover:text-brass">&larr; Back</Link>
       <h1 className="font-display text-3xl mt-4 mb-1">{session.name}</h1>
       <p className="text-ink/40 font-mono text-xs mb-6">{session.original_filename}</p>
-      <p className="text-brass mb-8">{STATUS_LABEL[session.status] ?? session.status}</p>
+      <p className="text-brass mb-8">{statusText}</p>
 
       {job && (
         <div className="mb-8">

frontend/src/pages/Sessions.tsx

@@ -1,6 +1,7 @@
 import { useEffect, useState, useCallback } from "react";
 import { Link, useNavigate } from "react-router-dom";
 import { api } from "../api";
+import { useCampaign } from "../contexts/CampaignContext";
 
 const STATUS_LABEL: Record<string, string> = {
   uploaded: "Ready to transcribe",
@@ -10,13 +11,16 @@ const STATUS_LABEL: Record<string, string> = {
 };
 
 export default function Sessions() {
+  const { currentCampaign } = useCampaign();
   const [sessions, setSessions] = useState<any[]>([]);
   const [name, setName] = useState("");
   const [file, setFile] = useState<File | null>(null);
   const [uploadProgress, setUploadProgress] = useState<number | null>(null);
   const nav = useNavigate();
 
-  const refresh = useCallback(() => api.listSessions().then(setSessions), []);
+  const refresh = useCallback(() => {
+    return api.listSessions(currentCampaign?.id).then(setSessions);
+  }, [currentCampaign?.id]);
   useEffect(() => {
     refresh();
   }, [refresh]);
@@ -32,15 +36,19 @@ export default function Sessions() {
   const upload = async () => {
     if (!file || !name) return;
     setUploadProgress(0);
-    const { session_id } = await api.createSession(name, file, setUploadProgress);
+    const { session_id } = await api.createSession(name, file, setUploadProgress, currentCampaign?.id);
     setUploadProgress(null);
     nav(`/sessions/${session_id}`);
   };
 
   return (
     <div className="max-w-3xl mx-auto py-16 px-4">
-      <div className="eyebrow mb-2">Nat20 Notes</div>
+      <div className="eyebrow mb-2">
-      <h1 className="font-display text-4xl mb-8">Your Transcriptions</h1>
+        {currentCampaign?.name ?? "Nat20 Notes"}
+      </div>
+      <h1 className="font-display text-4xl mb-8">
+        {currentCampaign ? `${currentCampaign.name} \u2014 Sessions` : "Sessions"}
+      </h1>
 
       <div className="card p-6 mb-8">
         <h2 className="font-display text-xl mb-4">New transcription</h2>
@@ -86,11 +94,6 @@ export default function Sessions() {
         })}
       </div>
 
-      <div className="mt-10 flex gap-4">
-        <Link to="/files" className="text-sm text-ink/40 hover:text-brass">Files</Link>
-        <Link to="/diagnostics" className="text-sm text-ink/40 hover:text-brass">System check</Link>
-        <Link to="/settings" className="text-sm text-ink/40 hover:text-brass">Settings</Link>
-      </div>
     </div>
   );
 }

frontend/src/pages/Settings.tsx

@@ -1,5 +1,4 @@
 import { useEffect, useState } from "react";
-import { Link } from "react-router-dom";
 import { api } from "../api";
 
 export default function Settings() {
@@ -22,7 +21,6 @@ export default function Settings() {
 
   return (
     <div className="max-w-4xl mx-auto py-16 px-4">
-      <Link to="/" className="text-sm text-ink/40 hover:text-brass">&larr; Back</Link>
       <h1 className="font-display text-3xl mt-4 mb-8">Settings</h1>
 
       <div className="grid grid-cols-2 gap-6 mb-6">