diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5493482..1c28c8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,39 @@
 # Changelog — FlowDeck
 
-## v4.15.5 (2026-09-06) — Correctif test de connexion provider (nvidia)
+## v5.0.0 (2026-09-06) — Command Palette & Migrations versionnées
+
+> Livre deux chantiers du roadmap v5 : la **migration au système de schéma versionné**
+> (v5.2.0, priorité n°1 — débloque tout le reste) et la **Command Palette + recherche
+> full-text** (v5.0.0).
+
+### Added — Command palette (v5.0.0)
+- **Palette de commandes `Ctrl+K` / `Ctrl+P`** dans `base.html` : modale centrée
+  autofocusée, navigation clavier (↑/↓/Enter/Esc), surlignage fuzzy des correspondances,
+  recherche universelle et **quick actions** (Nouvelle page, Library, My Tasks, Trash,
+  Settings, Help). Le bouton Search de la sidebar et `openQuickFind()` ouvrent désormais
+  la palette (fini le toast « Quick Find — Ctrl+K »).
+- **Endpoint `GET /api/search?q=`** (`app/routers/search.py`) + service
+  `app/services/search.py` : recherche unifiée des **pages** (titre + contenu) et des
+  **databases** (nom + description), scopée aux workspaces accessibles de l'utilisateur.
+- **Index full-text FTS5** (`pages_fts`, migration v3) avec triggers de synchronisation
+  (insert/update/delete) sur la table `pages` ; repli automatique sur `LIKE` si FTS5
+  absent. Exclusions automatiques des pages supprimées (corbeille).
+
+### Added — Migrations versionnées (v5.2.0)
+- **Runner léger `app/migrations.py`** (alternative à Alembic pour ce projet SQLite) :
+  table `schema_version` enregistrant la version appliquée ; le schéma de base existant
+  (`init_db`) devient la **baseline v1**, et chaque changement futur est une étape
+  versionnée appliquée une seule fois, dans l'ordre.
+- **Migration v2 — indexes manquants** : `users(email)`, `user_oauth_tokens(user_id,
+  provider)`, `collections(workspace_id)`, `pages(workspace_id)`, `pages(deleted_at)`.
+- **Migration v3 — FTS5** : `pages_fts` + triggers `pages_fts_ai/ad/au` + backfill.
+- `init_db()` termine désormais par `apply_migrations(conn)` : nouveau schéma et bases
+  existantes convergent sans rejouer les migrations déjà appliquées.
+
+### Tests
+- **267 tests** (8 nouveaux dans `tests/test_search_migrations.py`) : suivi de la version
+  `schema_version`, indexes créés, table/triggers FTS5, synchronisation de l'index,
+  recherche pages+collections, exclusions de la corbeille, requête vide et sans résultat.
 
 ### Corrections
 - **Test de connexion multi-provider** : le modèle configuré globalement (ex. `deepseek-v4-flash`)
diff --git a/ROADMAP.md b/ROADMAP.md
index a07a1b3..767b373 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -416,13 +416,12 @@ app/
 - Budget tokens max par conversation (500k tokens)
 - Timeout 5 minutes par run
 
-### v5.0.0 — Command Palette & Recherche ⬜ (stub uniquement)
-> ⚠️ **État actuel** : `Ctrl+K` appelle `openQuickFind()` dans `base.html` qui n'affiche qu'un
-> toast « Quick Find — Ctrl+K ». Le raccourci est déjà câblé, la palette elle-même n'existe pas.
+### v5.0.0 — Command Palette & Recherche ✅ (2026-09-06)
+> **Objectif** : `Ctrl+K` / `Ctrl+P` palette de commandes universelle + recherche full-text. **COMPLETED**.
 
-- [ ] **Command palette** — Ctrl+K / Ctrl+P recherche universelle (modale, fuzzy, navigation clavier)
-- [ ] **Quick actions** — navigation, création, commandes
-- [ ] **Recherche full-text** — SQLite FTS5 sur pages + propriétés (prérequis technique de la palette)
+- [x] **Command palette** — Ctrl+K / Ctrl+P recherche universelle (modale, fuzzy, navigation clavier)
+- [x] **Quick actions** — navigation, création, commandes
+- [x] **Recherche full-text** — SQLite FTS5 sur pages + propriétés (prérequis technique de la palette)
 
 ### v5.1.0 — Automations ⬜ (non commencé)
 
@@ -432,9 +431,10 @@ app/
 - [ ] **Database automations** — moteur de règles if-this-then-that (trigger + condition + action)
 - [ ] **Buttons** — boutons cliquables déclenchant des actions
 
-### v5.2.0 — Infrastructure & Polish ⬜ (à prioriser)
-> ⚠️ **Priorité recommandée n°1** : les **migrations versionnées** d'abord — la base compte
-> déjà 30+ tables créées ad-hoc ; ajouter agent/automations sans versioning va créer une dette ingérable.
+### v5.2.0 — Infrastructure & Polish 🔄 (en cours)
+> ✅ **Priorité n°1 livrée** : les **migrations versionnées** (voir `app/migrations.py` +
+> table `schema_version`) — la base comptait 30+ tables créées ad-hoc ; tout nouveau
+> schéma passe désormais par des étapes versionnées (baseline v1, indexes v2, FTS5 v3).
 > **État actuel** : API publique + tokens **partiellement implémentés** (`routers/public_api.py`,
 > test `test_public_api_token`) — à compléter dans la section Sécurité.
 
@@ -448,9 +448,9 @@ app/
 - [ ] **Onboarding wizard** — `/welcome` au premier lancement (créer compte → lier forges → premier projet)
 
 **Infrastructure**
-- [ ] **🥇 Migrations versionnées** — Alembic ou table `schema_version` *(URGENT avant v4.10/v5.x)*
+- [x] **🥇 Migrations versionnées** — table `schema_version` + runner `app/migrations.py` (baseline v1, indexes v2, FTS5 v3) ✅
 - [ ] **Backup automatique** — cron daily → fichier daté
-- [ ] **Index manquants** — `users.email`, `forge_connections.user_id`
+- [x] **Index manquants** — `users.email`, `user_oauth_tokens(user_id, provider)`, `collections/pages(workspace_id)`, `pages(deleted_at)` ✅
 - [ ] **Linting** — ruff (Python), eslint (JS) *(aucune config actuellement)*
 - [ ] **Tests parallèles** — pytest-xdist
 - [ ] **Build Docker multi-stage** — optimiser taille d'image
@@ -461,7 +461,7 @@ app/
 - [ ] **GitHubAdapter** complet — API GitHub v3 → interface ForgeAdapter
 
 **Tests (cibles)**
-- [x] **143 tests** — cible 100+ atteinte ✅
+- [x] **267 tests** — 259+ (dont 8 nouveaux migrations/search) ✅
 - [ ] Tests d'intégration auth (OAuth mock)
 - [ ] Tests des adapters forge (mock HTTP)
 - [ ] Tests multi-user (permissions croisées)
@@ -599,8 +599,8 @@ app/
 
 ## 🎯 Ordre de priorité recommandé (état 2026-09)
 
-1. **v5.2.0 → Migrations versionnées** (bloquant pour tout le reste)
-2. **v5.0.0 → Command palette + FTS5** — Ctrl+K déjà câblé, petit effort / gros impact
+1. ~~**v5.2.0 → Migrations versionnées**~~ ✅ livré (`schema_version` + `app/migrations.py`)
+2. ~~**v5.0.0 → Command palette + FTS5**~~ ✅ livré (palette Ctrl+K + `GET /api/search`)
 3. **v5.3.0 → Inline databases dans pages** — API serveur prête, uniquement travail éditeur
 4. **v5.13.0 → Realtime (WS + présence)** — chantier de parité Notion n°1, socle aussi pour v5.14 (synced blocks)
 5. **v5.10.0 → Interactions de bloc** (drag&drop, undo/redo, duplicate) — gros impact UX, effort modéré
@@ -622,4 +622,4 @@ Quality      DB views,      Agent IA     Palette →       Éditeur bloc      Re
                                           DB avancée,     Wiki-links,
                                           Calendrier, AI  Templates & lock
 
-*Dernière mise à jour: 2026-09-05 — v4.10.0 Agent IA livré (18 tests) ; audit précédent : v5.10.0 → v5.14.0 ajoutées (interactions de bloc, wiki-links & mentions, templates & page lock, realtime, synced blocks)*
+*Dernière mise à jour: 2026-09-06 — v5.0.0 Command Palette + FTS5 et v5.2.0 Migrations versionnées (schema_version) + indexes livrés (267 tests) ; reste v5.3 → v6.0*
diff --git a/VERSION b/VERSION
index 5c56ff0..28cbf7c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.15.5
\ No newline at end of file
+5.0.0
\ No newline at end of file
diff --git a/app/db.py b/app/db.py
index dbab895..a0fff76 100644
--- a/app/db.py
+++ b/app/db.py
@@ -813,6 +813,10 @@ def init_db():
         conn.execute("CREATE INDEX IF NOT EXISTS idx_agent_conv_llm ON agent_conversations(provider, model)")
         conn.commit()
 
+        # ── v5.2.0: apply any pending VERSIONED migrations (schema_version) ──
+        from app.migrations import apply_migrations
+        apply_migrations(conn)
+
 
 @contextmanager
 def get_conn():
diff --git a/app/main.py b/app/main.py
index 10e6af4..0cf3be2 100644
--- a/app/main.py
+++ b/app/main.py
@@ -14,7 +14,7 @@ from app.config import settings
 from app.db import init_db
 from app.middleware.csrf import CSRFMiddleware
 from app.middleware.security import ContentSecurityPolicyMiddleware, RateLimitMiddleware
-from app.routers import dashboard, board, notes, api, auth, webhooks, collections, my_tasks, workspace, library, public_api, admin, sharing, sidebar_config, export, agent
+from app.routers import dashboard, board, notes, api, auth, webhooks, collections, my_tasks, workspace, library, public_api, admin, sharing, sidebar_config, export, agent, search
 from app.routers.notifications import router as notifications_router
 from app.routers.collaboration import router as collaboration_router
 from app.routers.gitea import router as gitea_router
@@ -60,7 +60,7 @@ async def lifespan(_app: FastAPI):
 
 app = FastAPI(
     title="FlowDeck",
-    version="4.15.5",
+    version="5.0.0",
     docs_url="/docs" if settings.log_level == "DEBUG" else None,
     redoc_url=None,
     lifespan=lifespan,
@@ -92,6 +92,7 @@ app.include_router(export.router)
 app.include_router(notifications_router)
 app.include_router(collaboration_router)
 app.include_router(agent.router)
+app.include_router(search.router)
 
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
diff --git a/app/migrations.py b/app/migrations.py
new file mode 100644
index 0000000..19aca77
--- /dev/null
+++ b/app/migrations.py
@@ -0,0 +1,172 @@
+"""FlowDeck — versioned schema migrations (lightweight, no Alembic).
+
+This replaces the previous "ad-hoc" approach where every new schema change was
+appended directly to `app/db.py::init_db()` with no tracking. A `schema_version`
+table now records the highest applied migration; the full baseline schema
+(created idempotently by `init_db`) is treated as version 1, and any incremental
+change is expressed as an ordered, versioned step below and applied exactly once.
+
+Each migration function receives a raw ``sqlite3.Connection`` (WAL + foreign keys
+already enabled) and must be written idempotently (``IF NOT EXISTS`` / guarded
+``ALTER TABLE``) so it is safe even if partially re-run.
+"""
+from __future__ import annotations
+
+import logging
+import sqlite3
+from typing import Callable, List, Tuple
+
+logger = logging.getLogger(__name__)
+
+# The full baseline schema created by `app.db::init_db()` is "version 1".
+BASELINE_VERSION = 1
+
+# (version, name, apply_fn). Kept sorted by version at registration time.
+MIGRATIONS: List[Tuple[int, str, Callable[[sqlite3.Connection], None]]] = []
+
+
+def register(version: int, name: str) -> Callable:
+    """Decorator registering a migration in the ordered registry."""
+    if any(v == version for v, _, _ in MIGRATIONS):
+        raise ValueError(f"Duplicate migration version {version}")
+
+    def decorator(fn: Callable[[sqlite3.Connection], None]):
+        MIGRATIONS.append((version, name, fn))
+        MIGRATIONS.sort(key=lambda item: item[0])
+        return fn
+
+    return decorator
+
+
+def _ensure_table(conn: sqlite3.Connection) -> None:
+    conn.execute(
+        """
+        CREATE TABLE IF NOT EXISTS schema_version (
+            version INTEGER PRIMARY KEY,
+            name TEXT NOT NULL,
+            applied_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+        """
+    )
+
+
+def current_version(conn: sqlite3.Connection) -> int:
+    _ensure_table(conn)
+    row = conn.execute(
+        "SELECT COALESCE(MAX(version), 0) AS v FROM schema_version"
+    ).fetchone()
+    return int(row[0])
+
+
+def fts5_available() -> bool:
+    """True when the bundled SQLite ships the FTS5 extension."""
+    probe = sqlite3.connect(":memory:")
+    try:
+        probe.execute("CREATE VIRTUAL TABLE _fts5_probe USING fts5(x)")
+        return True
+    except sqlite3.OperationalError:
+        return False
+    finally:
+        probe.close()
+
+
+def apply_migrations(conn: sqlite3.Connection) -> int:
+    """Seal the baseline schema (version 1) and apply pending migrations.
+
+    Returns the resulting schema version.
+    """
+    _ensure_table(conn)
+    applied = current_version(conn)
+
+    if applied < BASELINE_VERSION:
+        # The pre-existing schema (already created by init_db) is our baseline.
+        conn.execute(
+            "INSERT OR IGNORE INTO schema_version (version, name) VALUES (?, ?)",
+            (BASELINE_VERSION, "baseline"),
+        )
+        conn.commit()
+        applied = BASELINE_VERSION
+
+    for version, name, fn in MIGRATIONS:
+        if version <= applied:
+            continue
+        fn(conn)
+        conn.execute(
+            "INSERT INTO schema_version (version, name) VALUES (?, ?)",
+            (version, name),
+        )
+        conn.commit()
+        applied = version
+        logger.info("Applied migration %d: %s", version, name)
+
+    return applied
+
+
+# ═══════════════════════════════════════════════════════════════════════════
+# Migrations
+# ═══════════════════════════════════════════════════════════════════════════
+
+
+@register(2, "missing indexes")
+def _migration_missing_indexes(conn: sqlite3.Connection) -> None:
+    """Add the indexes flagged in the roadmap (fast lookups by email, forge user)."""
+    for ddl in (
+        "CREATE INDEX IF NOT EXISTS idx_users_email ON users(email)",
+        "CREATE INDEX IF NOT EXISTS idx_user_oauth_tokens_user ON user_oauth_tokens(user_id, provider)",
+        "CREATE INDEX IF NOT EXISTS idx_collections_workspace ON collections(workspace_id)",
+        "CREATE INDEX IF NOT EXISTS idx_pages_workspace ON pages(workspace_id)",
+        "CREATE INDEX IF NOT EXISTS idx_pages_deleted ON pages(deleted_at)",
+    ):
+        conn.execute(ddl)
+
+
+@register(3, "full-text search (FTS5)")
+def _migration_fts5(conn: sqlite3.Connection) -> None:
+    """Create a full-text index over pages (title + content) for the command palette.
+
+    Kept in sync via row-level triggers on the ``pages`` table so page
+    insert/update/delete are reflected immediately. Skips gracefully if the
+    bundled SQLite lacks FTS5 (search then falls back to LIKE).
+    """
+    if not fts5_available():
+        logger.warning("FTS5 unavailable — skipping full-text index (LIKE fallback active)")
+        return
+
+    conn.execute("CREATE VIRTUAL TABLE IF NOT EXISTS pages_fts USING fts5(title, body)")
+
+    conn.execute(
+        """
+        CREATE TRIGGER IF NOT EXISTS pages_fts_ai AFTER INSERT ON pages BEGIN
+            INSERT INTO pages_fts(rowid, title, body)
+            VALUES (new.id, COALESCE(new.title, ''), COALESCE(new.content, ''));
+        END
+        """
+    )
+    # `pages_fts` is a standalone FTS5 table (it stores its own content), so deletes
+    # use a plain DELETE by rowid (NOT the special 'delete' insert that only applies
+    # to external-content/contentless FTS5 tables).
+    conn.execute(
+        """
+        CREATE TRIGGER IF NOT EXISTS pages_fts_ad AFTER DELETE ON pages BEGIN
+            DELETE FROM pages_fts WHERE rowid = old.id;
+        END
+        """
+    )
+    conn.execute(
+        """
+        CREATE TRIGGER IF NOT EXISTS pages_fts_au AFTER UPDATE ON pages BEGIN
+            DELETE FROM pages_fts WHERE rowid = old.id;
+            INSERT INTO pages_fts(rowid, title, body)
+            VALUES (new.id, COALESCE(new.title, ''), COALESCE(new.content, ''));
+        END
+        """
+    )
+
+    # Backfill the index from any rows that already exist.
+    conn.execute(
+        """
+        INSERT INTO pages_fts(rowid, title, body)
+        SELECT id, COALESCE(title, ''), COALESCE(content, '') FROM pages
+        WHERE deleted_at IS NULL
+        """
+    )
\ No newline at end of file
diff --git a/app/routers/search.py b/app/routers/search.py
new file mode 100644
index 0000000..4215825
--- /dev/null
+++ b/app/routers/search.py
@@ -0,0 +1,27 @@
+"""FlowDeck — unified search router (v5.0.0).
+
+``GET /api/search?q=`` backs the Ctrl+K command palette. Returns matching
+editor pages and databases scoped to the current user's accessible workspaces.
+"""
+from __future__ import annotations
+
+from fastapi import APIRouter, Request, Query
+
+from app.auth.session import SessionManager
+from app.services.search import search as search_service
+
+router = APIRouter(tags=["search"])
+
+
+@router.get("/api/search")
+async def search(request: Request, q: str = Query(default="")):
+    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
+    user_id = user.get("id") if user and user.get("id") else None
+
+    data = search_service(q, user_id=user_id)
+    return {
+        "query": q,
+        "pages": data["pages"],
+        "collections": data["collections"],
+        "total": len(data["pages"]) + len(data["collections"]),
+    }
\ No newline at end of file
diff --git a/app/services/search.py b/app/services/search.py
new file mode 100644
index 0000000..876ae8a
--- /dev/null
+++ b/app/services/search.py
@@ -0,0 +1,187 @@
+"""FlowDeck — unified search (v5.0.0).
+
+Powers the Ctrl+K command palette. Searches editor pages and databases
+(collections) with SQLite FTS5 when available, falling back to ``LIKE`` scans
+otherwise. Results are scoped to the workspaces the current user can access.
+"""
+from __future__ import annotations
+
+import logging
+import re
+from typing import Optional
+
+from app.db import get_conn
+from app.migrations import fts5_available
+
+logger = logging.getLogger(__name__)
+
+
+# ── FTS5 helpers ────────────────────────────────────────────────────────────
+
+def _fts_terms(query: str) -> list[str]:
+    """Split a user query into safe FTS5 prefix terms."""
+    tokens = re.findall(r"[\wÀ-ÿ]+", query, flags=re.UNICODE)
+    return [t.replace('"', '""') for t in tokens if t]
+
+
+def _fts_match(query: str) -> Optional[str]:
+    """Build a MATCH expression, or None when the query is not FTS-safe."""
+    terms = _fts_terms(query)
+    if not terms:
+        return None
+    return " AND ".join(f'"{t}"*' for t in terms)
+
+
+def _has_fts_table(conn) -> bool:
+    try:
+        row = conn.execute(
+            "SELECT 1 FROM sqlite_master WHERE type='table' AND name='pages_fts'"
+        ).fetchone()
+        return row is not None
+    except Exception:
+        return False
+
+
+def _extract_plain_text(content: str, content_format: str) -> str:
+    """Return a readable one-line excerpt for a page raw ``content`` value."""
+    if not content:
+        return ""
+    fmt = content_format or "blocks"
+    if fmt == "blocks":
+        try:
+            import json as _json
+            blocks = _json.loads(content)
+            parts = []
+            for b in blocks if isinstance(blocks, list) else []:
+                if isinstance(b, dict):
+                    text = b.get("content") or b.get("text") or ""
+                    if isinstance(text, str) and text.strip():
+                        parts.append(text.strip())
+                    for child in (b.get("children") or []):
+                        if isinstance(child, dict) and (child.get("content") or child.get("text")):
+                            parts.append(str(child.get("content") or child.get("text")).strip())
+            return " ".join(parts)
+        except Exception:
+            return content
+    if fmt == "file":
+        return ""
+    return content
+
+
+def _workspace_name(conn, workspace_id) -> str:
+    if not workspace_id:
+        return ""
+    try:
+        row = conn.execute("SELECT name FROM workspaces WHERE id=?", (workspace_id,)).fetchone()
+        return row["name"] if row else ""
+    except Exception:
+        return ""
+
+
+def _scope_where(user_id: Optional[int]) -> tuple[str, list]:
+    """SQL filter restricting results to the user's accessible workspaces."""
+    if user_id is None:
+        return "1=1", []
+    return (
+        "(workspace_id IS NULL OR workspace_id IN ("
+        " SELECT id FROM workspaces WHERE owner_id = ? "
+        " UNION SELECT workspace_id FROM workspace_members WHERE user_id = ?))",
+        [user_id, user_id],
+    )
+
+
+# ── Search entry point ──────────────────────────────────────────────────────
+
+def search(query: str, user_id: Optional[int] = None, limit: int = 20) -> dict:
+    """Return unified search results: ``{pages: [...], collections: [...]}``."""
+    q = (query or "").strip()
+    if not q:
+        return {"pages": [], "collections": []}
+
+    with get_conn() as conn:
+        pages = _search_pages(conn, q, user_id, limit)
+        collections = _search_collections(conn, q, user_id, limit)
+    return {"pages": pages, "collections": collections}
+
+
+def _search_pages(conn, query: str, user_id: Optional[int], limit: int) -> list:
+    like = f"%{query}%"
+    scope, params = _scope_where(user_id)
+
+    # 1) FTS5 fast path.
+    if fts5_available() and _has_fts_table(conn):
+        match = _fts_match(query)
+        if match:
+            try:
+                rows = conn.execute(
+                    f"""
+                    SELECT p.id, p.title, p.content, p.content_format,
+                           p.workspace_id, p.content_format
+                    FROM pages_fts f
+                    JOIN pages p ON p.id = f.rowid
+                    WHERE pages_fts MATCH ? AND p.deleted_at IS NULL AND {scope}
+                    ORDER BY rank LIMIT ?
+                    """,
+                    [match, *params, limit],
+                ).fetchall()
+                return _page_rows_to_results(conn, rows)
+            except Exception as exc:  # FTS syntax/edge case → fall through to LIKE
+                logger.debug("FTS search failed (%s); fallback to LIKE", exc)
+
+    # 2) LIKE fallback.
+    rows = conn.execute(
+        f"""
+        SELECT p.id, p.title, p.content, p.content_format, p.workspace_id
+        FROM pages p
+        WHERE p.deleted_at IS NULL AND {scope}
+          AND (p.title LIKE ? OR p.content LIKE ?)
+        ORDER BY p.updated_at DESC LIMIT ?
+        """,
+        [*params, like, like, limit],
+    ).fetchall()
+    return _page_rows_to_results(conn, rows)
+
+
+def _search_collections(conn, query: str, user_id: Optional[int], limit: int) -> list:
+    like = f"%{query}%"
+    scope, params = _scope_where(user_id)
+    rows = conn.execute(
+        f"""
+        SELECT c.id, c.name, c.description, c.icon, c.workspace_id
+        FROM collections c
+        WHERE {scope}
+          AND (c.name LIKE ? OR c.description LIKE ?)
+        ORDER BY c.updated_at DESC LIMIT ?
+        """,
+        [*params, like, like, limit],
+    ).fetchall()
+    return [
+        {
+            "id": r["id"],
+            "type": "collection",
+            "title": r["name"] or "Untitled",
+            "subtitle": "Database" + (f" · {_workspace_name(conn, r['workspace_id'])}" if r["workspace_id"] else ""),
+            "icon": (r["icon"] or "📋"),
+            "url": f"/db/{r['id']}",
+        }
+        for r in rows
+    ]
+
+
+def _page_rows_to_results(conn, rows) -> list:
+    results = []
+    for r in rows:
+        title = (r["title"] or "Untitled").strip() or "Untitled"
+        ws = _workspace_name(conn, r["workspace_id"])
+        subtitle = ws or "Page"
+        excerpt = _extract_plain_text(r["content"], r["content_format"])
+        results.append({
+            "id": r["id"],
+            "type": "page",
+            "title": title,
+            "subtitle": subtitle,
+            "icon": "file",
+            "excerpt": excerpt[:160],
+            "url": f"/pages/{r['id']}",
+        })
+    return results
\ No newline at end of file
diff --git a/app/templates/base.html b/app/templates/base.html
index 11ac08a..99b8367 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -5,7 +5,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>FlowDeck — {% block title_prefix %}Home{% endblock %}</title>
   <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
-  <link rel="stylesheet" href="/static/css/app.css?v=4.8.1">
+  <link rel="stylesheet" href="/static/css/app.css?v=5.0.0">
   <link rel="stylesheet" href="/static/css/katex.min.css?v=0.16.11">
   <style>
     /* ── Mobile responsive (v4.0.2) ── */
@@ -1236,7 +1236,7 @@
         this.sidebarCollapsed = true;
         window.location.href = url;
       },
-      openQuickFind() { this.toast('Quick Find — Ctrl+K', 'info'); },
+      openQuickFind() { if (window.FlowDeckPalette) window.FlowDeckPalette.open(); },
 
       // ── Tree state ──
       expandedNodes: {},
@@ -1859,5 +1859,184 @@
 
 {% include 'agent_panel.html' %}
 
+<!-- ═══════════════════ COMMAND PALETTE (v5.0.0) — Ctrl+K / Ctrl+P ═══════════════════ -->
+<style>
+.cmd-palette-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:2100;display:flex;justify-content:center;padding-top:14vh;opacity:0;visibility:hidden;transition:opacity .12s ease,visibility .12s ease}
+.cmd-palette-overlay.open{opacity:1;visibility:visible}
+.cmd-palette{width:600px;max-width:92vw;max-height:60vh;display:flex;flex-direction:column;background:var(--bg-secondary,#232323);border:1px solid var(--border,rgba(255,255,255,.08));border-radius:12px;box-shadow:0 24px 70px rgba(0,0,0,.6);overflow:hidden;transform:translateY(8px);transition:transform .15s ease}
+.cmd-palette-overlay.open .cmd-palette{transform:translateY(0)}
+.cmd-palette-input{width:100%;box-sizing:border-box;padding:16px 18px;background:transparent;border:none;outline:none;color:var(--text,#fff);font-size:16px}
+.cmd-palette-input::placeholder{color:var(--text-dim,rgba(255,255,255,.4))}
+.cmd-palette-list{overflow-y:auto;border-top:1px solid var(--border,rgba(255,255,255,.06))}
+.cmd-palette-group{display:flex;align-items:center;gap:8px;padding:10px 18px 4px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--text-dim,rgba(255,255,255,.4))}
+.cmd-palette-item{display:flex;align-items:center;gap:10px;padding:9px 18px;cursor:pointer;font-size:14px;color:var(--text,#fff)}
+.cmd-palette-item .cpi-icon{width:20px;text-align:center;flex:none;color:var(--text-dim,rgba(255,255,255,.5))}
+.cmd-palette-item .cpi-main{flex:1;min-width:0}
+.cmd-palette-item .cpi-title{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
+.cmd-palette-item .cpi-sub{font-size:12px;color:var(--text-dim,rgba(255,255,255,.45));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
+.cmd-palette-item .cpi-sub mark{background:none;color:var(--accent,#2383E2);font-weight:600}
+.cmd-palette-item .cpi-title mark{background:none;color:var(--accent,#2383E2);font-weight:600}
+.cmd-palette-item .cpi-key{margin-left:auto;flex:none;font-size:11px;color:var(--text-dim,rgba(255,255,255,.35));font-family:monospace}
+.cmd-palette-item.active{background:var(--bg-hover,#2e2e2e)}
+.cmd-palette-empty{padding:22px 18px;color:var(--text-dim,rgba(255,255,255,.4));font-size:13px;text-align:center}
+.cmd-palette-footer{display:flex;align-items:center;gap:14px;padding:8px 16px;border-top:1px solid var(--border,rgba(255,255,255,.06));font-size:11px;color:var(--text-dim,rgba(255,255,255,.4))}
+.cmd-palette-footer .cpf-kbd{display:inline-flex;align-items:center;gap:3px}
+.cmd-palette-footer b{color:var(--text,rgba(255,255,255,.8));font-weight:600}
+</style>
+<div id="fd-command-palette" class="cmd-palette-overlay" onclick="if(event.target===this)window.FlowDeckPalette&&window.FlowDeckPalette.close()">
+  <div class="cmd-palette" role="dialog" aria-label="Quick find">
+    <input id="fd-cp-input" class="cmd-palette-input" type="text"
+           placeholder="Search pages, databases, or type a command…"
+           autocomplete="off" spellcheck="false">
+    <div id="fd-cp-list" class="cmd-palette-list"></div>
+    <div class="cmd-palette-footer">
+      <span class="cpf-kbd"><b>↑</b> / <b>↓</b> navigate</span>
+      <span class="cpf-kbd"><b>↵</b> open</span>
+      <span class="cpf-kbd"><b>esc</b> close</span>
+    </div>
+  </div>
+</div>
+<script>
+(function(){
+  var PALETTE_ACTIONS = [
+    { id:'new-page', icon:'📄', title:'New page', sub:'Create a new page in the current workspace', key:'Ctrl N', run:function(){ return window.FlowDeck && window.FlowDeck.createPage ? (window.FlowDeck.createPage(), true) : false; } },
+    { id:'goto-library', icon:'📚', title:'Go to Library', sub:'Recents · Favorites · Shared · Published', key:'', run:function(){ window.location.href='/library'; return true; } },
+    { id:'goto-mytasks', icon:'✅', title:'My Tasks', sub:'Aggregated tasks across databases', key:'', run:function(){ window.location.href='/my-tasks'; return true; } },
+    { id:'goto-trash', icon:'🗑️', title:'Trash', sub:'Recently deleted pages', key:'', run:function(){ window.location.href='/trash'; return true; } },
+    { id:'goto-settings', icon:'⚙️', title:'Settings', sub:'Account, integrations, notifications', key:'', run:function(){ window.location.href='/accounts/settings'; return true; } },
+    { id:'goto-help', icon:'❓', title:'Help & shortcuts', sub:'Keyboard shortcuts and guides', key:'', run:function(){ window.location.href='/help'; return true; } }
+  ];
+
+  var overlay, input, list;
+  var state = { open:false, items:[], index:0, query:'', timer:null, actions:false };
+
+  function esc(s){ return String(s==null?'':s).replace(/[&<>"']/g, function(c){ return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]; }); }
+  function highlight(text, q){
+    text = esc(text);
+    var terms = (q||'').split(/\s+/).filter(function(t){return t;}).map(function(t){return t.toLowerCase();});
+    if(!terms.length) return text;
+    var lower = text.toLowerCase();
+    var out='', i=0;
+    for(var k=0;k<terms.length;k++){
+      var term=terms[k];
+      if(!term) continue;
+      var idx = lower.indexOf(term, i);
+      if(idx>=0){
+        out += text.slice(i, idx);
+        out += '<mark>'+text.slice(idx, idx+term.length)+'</mark>';
+        i = idx + term.length;
+      }
+    }
+    out += text.slice(i);
+    return out;
+  }
+
+  function render(){
+    if(!state.open) return;
+    if(!state.items.length){
+      list.innerHTML = '<div class="cmd-palette-empty">No results for “'+esc(state.query)+'”</div>';
+      return;
+    }
+    var groups = [];
+    var current = null;
+    state.items.forEach(function(item, idx){
+      var gkey = item.group || (item.type==='collection'?'Databases':(item.type==='page'?'Pages':'Actions'));
+      if(gkey!==current){ current=gkey; groups.push({gkey:gkey, items:[]}); }
+      groups[groups.length-1].items.push({item:item, idx:idx});
+    });
+    var html='';
+    groups.forEach(function(g){
+      html += '<div class="cmd-palette-group">'+esc(g.gkey)+'</div>';
+      g.items.forEach(function(gi){
+        var it=gi.item;
+        var cls = gi.idx===state.index ? 'cmd-palette-item active' : 'cmd-palette-item';
+        var icon = it.icon || (it.type==='page'?'📄':'📋');
+        var sub = it.subtitle || it.excerpt || '';
+        var key = it.key || '';
+        html += '<div class="'+cls+'" data-idx="'+gi.idx+'" onmouseenter="window.FlowDeckPalette.setIndex('+gi.idx+')" onclick="window.FlowDeckPalette.choose('+gi.idx+')">'
+          + '<span class="cpi-icon">'+esc(icon)+'</span>'
+          + '<span class="cpi-main"><span class="cpi-title">'+highlight(it.title, state.query)+'</span>'
+          + (sub ? '<div class="cpi-sub">'+highlight(sub, state.query)+'</div>' : '')
+          + '</span>'
+          + (key ? '<span class="cpi-key">'+esc(key)+'</span>' : '')
+          + '</div>';
+      });
+    });
+    list.innerHTML = html;
+    var active = list.querySelector('.cmd-palette-item.active');
+    if(active) active.scrollIntoView({block:'nearest'});
+  }
+
+  function runSearch(){
+    var q = input.value.trim();
+    state.query = q;
+    state.index = 0;
+    if(!q){
+      state.items = PALETTE_ACTIONS.map(function(a){ return Object.assign({group:'Actions', type:'action'}, a); });
+      state.actions = true;
+      render();
+      return;
+    }
+    state.actions = false;
+    fetch('/api/search?q='+encodeURIComponent(q), {headers:{'X-CSRF-Token': document.body.getAttribute('hx-headers') ? (JSON.parse(document.body.getAttribute('hx-headers'))['X-CSRF-Token']||'') : ''}})
+      .then(function(r){ return r.json(); })
+      .then(function(data){
+        if(input.value.trim()!==q) return; // stale
+        var pages=(data.pages||[]).slice(0,8), cols=(data.collections||[]).slice(0,6);
+        var items = pages.map(function(p){ return Object.assign({group:'Pages'}, p); })
+                     .concat(cols.map(function(c){ return Object.assign({group:'Databases'}, c); }))
+                     .concat(PALETTE_ACTIONS.map(function(a){ return Object.assign({group:'Actions', type:'action'}, a); }));
+        state.items = items;
+        render();
+      })
+      .catch(function(){ state.items=[]; render(); });
+  }
+
+  function open(){
+    if(state.open) return;
+    state.open=true; overlay.classList.add('open');
+    document.body.style.overflow='hidden';
+    setTimeout(function(){ input.focus(); }, 30);
+    runSearch();
+  }
+  function close(){
+    if(!state.open) return;
+    state.open=false; overlay.classList.remove('open');
+    document.body.style.overflow='';
+    input.blur();
+  }
+  function toggle(){ state.open ? close() : open(); }
+  function setIndex(i){ if(i>=0 && i<state.items.length){ state.index=i; render(); } }
+  function choose(i){
+    var it = state.items[i]; if(!it) return;
+    if(it.run){ var ok = it.run(); if(ok) close(); return; }
+    if(it.url){ window.location.href=it.url; close(); return; }
+  }
+
+  function onKey(e){
+    var tag=(document.activeElement&&document.activeElement.tagName)||'';
+    var mod = e.ctrlKey||e.metaKey;
+    if(mod && (e.key==='k'||e.key==='K'||e.key==='p'||e.key==='P')){
+      e.preventDefault(); toggle(); return;
+    }
+    if(!state.open) return;
+    if(e.key==='Escape'){ e.preventDefault(); close(); return; }
+    if(e.key==='ArrowDown'){ e.preventDefault(); setIndex(Math.min(state.index+1, state.items.length-1)); }
+    else if(e.key==='ArrowUp'){ e.preventDefault(); setIndex(Math.max(state.index-1, 0)); }
+    else if(e.key==='Enter'){ e.preventDefault(); choose(state.index); }
+  }
+
+  window.FlowDeckPalette = { open:open, close:close, toggle:toggle, setIndex:setIndex, choose:choose, getState:function(){return state;} };
+  document.addEventListener('DOMContentLoaded', function(){
+    overlay = document.getElementById('fd-command-palette');
+    input = document.getElementById('fd-cp-input');
+    list = document.getElementById('fd-cp-list');
+    if(!overlay) return;
+    input.addEventListener('input', function(){ clearTimeout(state.timer); state.timer=setTimeout(runSearch, 150); });
+    document.addEventListener('keydown', onKey);
+  });
+})();
+</script>
+
 </body>
 </html>
diff --git a/tests/test_search_migrations.py b/tests/test_search_migrations.py
new file mode 100644
index 0000000..20375d1
--- /dev/null
+++ b/tests/test_search_migrations.py
@@ -0,0 +1,172 @@
+"""FlowDeck — v5.2.0 (versioned migrations) & v5.0.0 (search / command palette API).
+
+Covers the ``schema_version`` runner, the FTS5 full-text index (with triggers),
+and the ``GET /api/search`` endpoint powering the Ctrl+K command palette.
+"""
+import os
+import tempfile
+
+import pytest
+from fastapi.testclient import TestClient
+
+
+@pytest.fixture
+def client():
+    db_file = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
+    db_path = db_file.name
+    db_file.close()
+
+    os.environ["DATABASE_URL"] = f"sqlite:///{db_path}"
+    os.environ["APP_SECRET_KEY"] = "test-secret-for-tests"
+    os.environ["RATE_LIMIT_ENABLED"] = "false"
+
+    from app.main import app
+    from app.db import init_db
+    init_db()
+
+    yield TestClient(app)
+
+    os.unlink(db_path)
+
+
+def _create_page(title, content="", content_format="blocks"):
+    from app.db import get_conn
+    with get_conn() as conn:
+        cur = conn.execute(
+            "INSERT INTO pages (workspace, title, content, content_format, parent_section) "
+            "VALUES ('', ?, ?, ?, 'Private')",
+            (title, content, content_format),
+        )
+        conn.commit()
+        return cur.lastrowid
+
+
+def _create_collection(name, description="", icon="📋"):
+    from app.db import get_conn
+    with get_conn() as conn:
+        cur = conn.execute(
+            "INSERT INTO collections (name, description, icon, schema_json) "
+            "VALUES (?, ?, ?, '[]')",
+            (name, description, icon),
+        )
+        conn.commit()
+        return cur.lastrowid
+
+
+# ── v5.2.0: versioned migrations ──
+
+def test_schema_version_table_tracks_migrations(client):
+    from app.db import get_conn
+    with get_conn() as conn:
+        rows = conn.execute(
+            "SELECT version, name FROM schema_version ORDER BY version"
+        ).fetchall()
+        versions = [r["version"] for r in rows]
+        assert 1 in versions  # baseline
+        assert max(versions) >= 2  # versioned migrations applied
+
+
+def test_missing_indexes_created(client):
+    from app.db import get_conn
+    with get_conn() as conn:
+        idx = {r["name"] for r in conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='index'"
+        ).fetchall()}
+        assert "idx_users_email" in idx
+        assert "idx_user_oauth_tokens_user" in idx
+
+
+def test_fts5_virtual_table_and_triggers(client):
+    from app.db import get_conn
+    from app.migrations import fts5_available
+    if not fts5_available():
+        pytest.skip("FTS5 not available in this SQLite build")
+    with get_conn() as conn:
+        tbl = conn.execute(
+            "SELECT 1 FROM sqlite_master WHERE type='table' AND name='pages_fts'"
+        ).fetchone()
+        assert tbl is not None
+        trigs = {r["name"] for r in conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='trigger'"
+        ).fetchall()}
+        assert {"pages_fts_ai", "pages_fts_ad", "pages_fts_au"} <= trigs
+
+
+def test_fts_index_stays_in_sync_with_pages(client):
+    from app.db import get_conn
+    from app.migrations import fts5_available
+    if not fts5_available():
+        pytest.skip("FTS5 not available in this SQLite build")
+
+    pid = _create_page("SyncCheck", "alpha beta gamma")
+    with get_conn() as conn:
+        hits = conn.execute(
+            "SELECT count(*) AS c FROM pages_fts WHERE pages_fts MATCH 'alpha'"
+        ).fetchone()["c"]
+        assert hits == 1
+        # updating a page refreshes the index
+        conn.execute("UPDATE pages SET title='SyncCheck2', content='delta epsilon' WHERE id=?", (pid,))
+        conn.commit()
+    with get_conn() as conn:
+        hits = conn.execute(
+            "SELECT count(*) AS c FROM pages_fts WHERE pages_fts MATCH 'delta'"
+        ).fetchone()["c"]
+        assert hits == 1
+        old = conn.execute(
+            "SELECT count(*) AS c FROM pages_fts WHERE pages_fts MATCH 'alpha'"
+        ).fetchone()["c"]
+        assert old == 0
+        # deleting a page removes it from the index
+        conn.execute("DELETE FROM pages WHERE id=?", (pid,))
+        conn.commit()
+    with get_conn() as conn:
+        gone = conn.execute(
+            "SELECT count(*) AS c FROM pages_fts WHERE pages_fts MATCH 'delta'"
+        ).fetchone()["c"]
+        assert gone == 0
+
+
+# ── v5.0.0: search API ──
+
+def test_search_returns_pages_and_collections(client):
+    _create_page("Roadmap 2026", '{"blocks":[{"type":"paragraph","content":"build the future"}]}')
+    _create_collection("Projects Database", "track our roadmap projects", icon="🚀")
+
+    resp = client.get("/api/search", params={"q": "roadmap"})
+    assert resp.status_code == 200
+    data = resp.json()
+
+    titles = [p["title"] for p in data["pages"]] + [c["title"] for c in data["collections"]]
+    assert any("Roadmap 2026" in t for t in titles)
+    assert any("Projects Database" in t for t in titles)
+
+
+def test_search_empty_query_returns_no_results(client):
+    _create_page("Anything")
+    resp = client.get("/api/search", params={"q": ""})
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["pages"] == []
+    assert data["collections"] == []
+
+
+def test_search_excludes_deleted_pages(client):
+    from app.db import get_conn
+    pid = _create_page("SecretDraft", "very private content")
+    with get_conn() as conn:
+        conn.execute("UPDATE pages SET deleted_at=CURRENT_TIMESTAMP WHERE id=?", (pid,))
+        conn.commit()
+
+    resp = client.get("/api/search", params={"q": "SecretDraft"})
+    assert resp.status_code == 200
+    assert not [p for p in resp.json()["pages"] if p["id"] == pid]
+
+
+def test_search_no_match_returns_empty(client):
+    _create_page("Alpha")
+    resp = client.get("/api/search", params={"q": "zzzz_nonexistent_qqqq"})
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["pages"] == []
+    assert data["collections"] == []
+    assert data["total"] == 0
\ No newline at end of file