fix: regression — auto-ingest + status not firing on startup (waiting for session)

[four-bytes-robby]

Regression (from #148, commit 1fa320a)

Auto-ingest and startup status updates stopped working immediately at plugin init. Two root causes:

1. status.ts write() drops all unscoped publishes

The if (!sid) return; guard introduced in #148 silently drops all status updates before a session exists. The TUI home view subscribes to the unscoped brain service channel, so it receives nothing until a session is created. Pre-#148, write() fell through to sid ? scoped.forSession(sid) : scoped.

2. Auto-ingest deferred to session.created

Previously auto-ingest was immediate fire-and-forget at plugin init. #148 moved it to the session.created event handler, delaying ingest until a session opens.

Fix

1. status.ts: Remove if (!sid) return; guard, restore unscoped fallback const target = sid ? scoped.forSession(sid) : scoped;
2. four-opencode-brain.ts: Move auto-ingest back to immediate fire-and-forget at plugin init (keep session.created handler for session ID capture only)

[coderabbitai]

🔗 Related PRs

#135 - [bug] fix: TUI subscribes to wrong channel during pre-session ingest [merged]
#144 - fix: filter bus messages by session ID [merged]
#145 - feat: migrate to scoped bus API (forService/forSession) [merged]
#148 - fix: sidebar always subscribes to brain/status for ingest progress [merged]
#150 - fix: brain never reaches 'ready' status + console.warn → app.log [closed]

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