[P1] Stub Cleanup: Remove services/missing/ directory

[Delqhi]

Task

Remove the 10 unused service stub files from services/missing/.

Files to remove

SessionMemory.ts, teamMemorySync.ts, MagicDocs.ts, autoDream.ts, awaySummary.ts, settingsSync.ts, vcr.ts, voice.ts, PromptSuggestion.ts, index.ts

Why

These are staging stubs — real implementations already exist under packages/opensin-sdk/src/services/. Keeping stubs causes confusion.

Validation

grep -r "from.*services/missing" . --include="*.ts" | wc -l = 0

Linked Epic

Epic #1089

[Delqhi]

Complete: Removed 10 service stubs from services/missing/. Commit 7f232a3. Real implementations exist in packages/opensin-sdk/src/services/.

[github-actions]

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