docs(transistor): scope publish audio-guard and add missing trigger rows

Document that the publish audio-guard fires only for --status published
(scheduling intentionally precedes audio attach) and that its pre-publish
episode GET consumes one rate-limit slot, relevant to bulk re-publish
loops.

Add references/skill-triggers.md rows for transistor and trakt, the two
thickened skills missing from the trigger index; phrasing follows each
skill frontmatter description.

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

references/skill-triggers.md

@@ -24,6 +24,8 @@ Each skill's `description` field is the canonical routing contract. This conveni
 | "Open Library", "openlibrary", "book search", "ISBN lookup", "author records", "work details", "book editions", "book ratings", "cover image" | [openlibrary](../openlibrary/SKILL.md) |
 | "PeerTube", "peertube", "federated video", "SepiaSearch", "decentralized video platform", "PEERTUBE_SERVER", "my PeerTube instance" | [peertube](../peertube/SKILL.md) |
 | "weather", "forecast", "temperature", "is it raining", "Tempest", "WeatherFlow", "my station" | [tempest](../tempest/SKILL.md) |
+| "Transistor", "Transistor.fm", "podcast hosting", "podcast episodes", "episode publishing", "private podcast subscribers", "podcast download analytics" | [transistor](../transistor/SKILL.md) |
+| "Trakt", "Trakt.tv", "trending movies", "trending shows", "popular movies", "anticipated movies", "what's trending", "TRAKT_CLIENT_ID" | [trakt](../trakt/SKILL.md) |
 | "TMDb", "The Movie Database", "movie search", "trending movies", "upcoming TV releases", "TMDB_ACCESS_TOKEN" | [tmdb](../tmdb/SKILL.md) |
 | "traefik", "reverse proxy", "load balancer", "API gateway", "Let's Encrypt", "ACME", "Docker routing", "traefik.yml", "entry point", "middleware", "TLS termination", "forward auth", "rate limit" | [traefik](../traefik/SKILL.md) |
 | "reverse-engineer", "understand this codebase", "PRD from code", "architecture document", "architecture health", "coupling analysis", "modularity", "decomposition readiness", "data ownership map", "distributed workflow analysis", "reconciliation path" | [software-architecture-analysis](../software-architecture-analysis/SKILL.md) |

transistor/references/episode-publish-lifecycle.md

@@ -105,7 +105,12 @@ transistor episode-publish --id <EPISODE_ID>
 
 The bundled CLI guards step 3: if `attributes.media_url` is still empty it
 refuses to publish (an audio-less item would go out to every feed reader)
-and prints the attach-audio recipe; `--force` overrides.
+and prints the attach-audio recipe; `--force` overrides. The guard is scoped
+to `--status published` (the default) — scheduling intentionally precedes
+audio attach, so a `scheduled` publish needs no audio yet — and it performs
+one pre-publish `GET /episodes/:id`, which consumes one of the
+10-requests-per-10-seconds rate-limit slots: worth counting in bulk
+re-publish loops.
 
 ## Worked recipe: raw curl