fix(node,hub): HEVC transcode fallback, live-add progress, per-group TMDB toggle

Three bugs found live testing the Videos app against a real HEVC/EAC3 show,
plus a design change requested afterward:

- Streaming always did "-c:v copy", which faithfully reports a source's real
  hev1 codec string but is unplayable in a browser with no HEVC decoder
  (most Chrome/Linux builds). The node now transcodes to H264 whenever the
  probed codec is browser-incompatible (media_probe.py's new
  BROWSER_INCOMPATIBLE_VIDEO_CODECS), with a `transcode_incompatible_video`
  node.toml opt-out for operators who know their viewers already decode it.

- Dropping a whole season into an already-watched folder gave no scanning
  indicator and no progress bar: IndexProgress was only ever updated by the
  two bulk scan paths, never by the real-time per-file watchdog path
  (_schedule_update/_debounce/_update_entry). That path now accounts a
  "burst" the same way, without double-counting a file rewritten mid-debounce.

- A stray literal "0" rendered in the video detail modal when there was no
  TMDB match (`meta.confidence` is 0, and `0 && x` renders "0" in JSX/htm,
  not nothing) — `confident` is now a real boolean.

- Whether TMDB is used at all moves from a node-wide setting to per-group
  (OP_TMDB_ENABLED/tmdb_enabled/tmdb_enabled_ack, scoped like OP_VIDEO_ROOT):
  an operator running a real media-library group alongside test/demo groups
  on one node wants outbound TMDB traffic for the one that needs it, not all
  of them. The custom API token and query language stay node-wide, one
  shared credential/cache (tmdb_config/OP_TMDB_CONFIG, unchanged reasoning).
  MNP_VERSION 0.6 -> 0.7, additive.

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

1 files changed, 18 insertions, 7 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/daemon.py b/packages/meshbay-node/src/meshbay_node/daemon.py
index bf6bd64..7691467 100644
--- a/packages/meshbay-node/src/meshbay_node/daemon.py
+++ b/packages/meshbay-node/src/meshbay_node/daemon.py
@@ -334,6 +334,12 @@ class NodeDaemon:
                     # group — "" means the whole group index.
                     "video_root": await self._roster.video_root(
                         group_cfg.id) if self._roster else "",
+                    # Whether TMDB lookups run for this group at all —
+                    # per-group (2026-08-24, used to be node-wide), same
+                    # "read once, kept current in place by the signed op"
+                    # shape as video_root above.
+                    "tmdb_enabled": await self._roster.tmdb_enabled(
+                        group_cfg.id) if self._roster else True,
                 }
 
             if not groups_ctx:
@@ -364,13 +370,14 @@ class NodeDaemon:
             await self._media_cache.open()
             self._enricher = Enricher(self._media_cache)
             self._tmdb_client = TmdbClient(roster=self._roster)
-            # Read once at load, like member_upload/enabled_apps — kept
-            # current in place by ops.set_tmdb_config (the signed op),
-            # exposed to every group's handshake ack via `daemon_state`
-            # (already wired to self._webrtc._ctx below) since this is
-            # node-wide, not per-group.
-            tmdb_enabled, tmdb_token, tmdb_language = await self._roster.tmdb_config()
-            self._state["tmdb_enabled"] = tmdb_enabled
+            # Token/language only — read once at load, kept current in place
+            # by ops.set_tmdb_config (the signed op), exposed to every
+            # group's handshake ack via `daemon_state` (already wired to
+            # self._webrtc._ctx below) since these stay node-wide, one
+            # shared credential/cache. Whether TMDB is used at all is now
+            # per-group instead — see each group's own "tmdb_enabled" in
+            # groups_ctx above.
+            tmdb_token, tmdb_language = await self._roster.tmdb_config()
             self._state["tmdb_token_customized"] = bool(tmdb_token)
             self._state["tmdb_language"] = tmdb_language or ""
             log.info("Media cache opened: %s", media_cache_db)
@@ -390,6 +397,7 @@ class NodeDaemon:
                     groups=groups_ctx,
                     denylist=denylist,
                     max_concurrent_streams=self._config.node.max_concurrent_streams,
+                    transcode_incompatible_video=self._config.node.transcode_incompatible_video,
                 )
                 # No global chat_store here: each group's store lives in
                 # groups_ctx[gid]["chat_store"] and is resolved per session via
@@ -721,6 +729,9 @@ class NodeDaemon:
                 "video_root": (
                     await self._roster.video_root(group_cfg.id)
                     if self._roster else ""),
+                "tmdb_enabled": (
+                    await self._roster.tmdb_enabled(group_cfg.id)
+                    if self._roster else True),
                 "chat_store": store,
             }
             groups_ctx[group_cfg.id] = new_ctx