Merge branch 'docs/mediacenter-videos-app': Videos group app

Poster grid / flat list browsing, TMDB metadata enrichment, thumbnail
generation and caching, season-specific overviews, manual match
correction, and the create-group wizard's app-selection step.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LAmyXtc6dAADsH23ydXQpY

1 files changed, 42 insertions, 0 deletions

diff --git a/packages/meshbay-common/src/meshbay_common/protocol.py b/packages/meshbay-common/src/meshbay_common/protocol.py
index e1bfb8e..900acc2 100644
--- a/packages/meshbay-common/src/meshbay_common/protocol.py
+++ b/packages/meshbay-common/src/meshbay_common/protocol.py
@@ -90,6 +90,18 @@ class MNP:
     APPS_ENABLED_ACK     = "apps_enabled_ack"
     SET_SCAN_SETTINGS     = "set_scan_settings"     # operator → node: reconcile/debounce timing
     SET_SCAN_SETTINGS_ACK = "set_scan_settings_ack"
+    MEDIA_META_REQ        = "media_meta_req"        # client → node: TMDB metadata for a path
+    MEDIA_META_RESP       = "media_meta_resp"       # node → client: TMDB metadata (or none)
+    VIDEO_ROOT            = "video_root"             # operator → node: which folder is the Videos entry point
+    VIDEO_ROOT_ACK        = "video_root_ack"
+    TMDB_CONFIG           = "tmdb_config"            # operator → node: enable/disable TMDB, set token
+    TMDB_CONFIG_ACK       = "tmdb_config_ack"        # node → everyone: new TMDB config (never the token)
+    SEASON_META_REQ       = "season_meta_req"        # client → node: TMDB overview/poster for one season
+    SEASON_META_RESP      = "season_meta_resp"       # node → client: season-level TMDB fields (or none)
+    TMDB_SEARCH_REQ       = "tmdb_search_req"        # client → node: candidate TMDB matches for a query
+    TMDB_SEARCH_RESP      = "tmdb_search_resp"       # node → client: candidate list (id, title, year, poster)
+    TMDB_OVERRIDE         = "tmdb_override"          # operator → node: replace a show/movie's TMDB match
+    TMDB_OVERRIDE_ACK     = "tmdb_override_ack"
     # Device linking. A new device files a request bound to a code it displays;
     # an already-pinned device of the same account approves it. Neither the hub
     # nor the node can produce the countersignature.
@@ -141,6 +153,30 @@ class IndexEntry:
     thumb_hash: str | None = None  # blake3 of thumbnail
     uploader_id: str | None = None  # user_id of who uploaded (None = pre-existing on disk)
     uploader_pk: str | None = None  # Ed25519 public key of uploader (base64 raw 32 bytes)
+    width:      int | None = None  # pixels, video only
+    height:     int | None = None  # pixels, video only
+    display_title: str | None = None  # parsed or cleaned-filename title, Videos app
+    season:     int | None = None  # parsed season number, Videos app
+    episode:    int | None = None  # parsed episode number, Videos app
+
+
+def index_entry_wire(e: IndexEntry) -> dict:
+    """
+    The wire-dict shape used by INDEX_SYNC/INDEX_DELTA hand-built messages
+    (as opposed to GroupIndex.serialize()'s asdict() encoding of the whole
+    index). Centralized so the three call sites that build these
+    (webrtc_server._do_index_sync, daemon._broadcast_index_change's two
+    branches) can't drift from each other as fields are added.
+    """
+    return {
+        "id": e.id, "name": e.name, "path": e.path,
+        "size": e.size, "type": e.type, "added_at": e.added_at,
+        "uploader_id": e.uploader_id,
+        "duration": e.duration, "thumb_hash": e.thumb_hash,
+        "width": e.width, "height": e.height,
+        "display_title": e.display_title,
+        "season": e.season, "episode": e.episode,
+    }
 
 
 @dataclass
@@ -149,6 +185,12 @@ class IndexDelta:
     version:      int
     additions:    list[IndexEntry] = field(default_factory=list)
     deletions:    list[str] = field(default_factory=list)  # list of ids
+    # Same id as before (same file, same content hash), different field
+    # values — e.g. the Videos app's async enrichment filling in duration/
+    # thumb_hash/etc. after the file was already indexed with hash+size only.
+    # A distinct list from `additions`: `GroupIndex.diff()` only ever adds an
+    # id here once it has already appeared unchanged in a prior snapshot.
+    updates:      list[IndexEntry] = field(default_factory=list)
 
 
 # ── Chunk request/response ────────────────────────────────────────────────────