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Two P2 issues Codex raised on the previous fixes: - Unscoped program lookups could return the same programme twice now that the dedup index preserves per-source rows: the M3U timeline calls getChannelPrograms without sourceUrls, so two sources sharing channel/start/title both surfaced. Added toEpgProgams(), which collapses duplicate channel|start|title slots after mapping/validation, applied at every getChannelPrograms return. - EpgQueueService.fetchEpg unconditionally cleared the in-flight marker in its finally, which could drop a marker a re-enqueued request took over after invalidate(). It now only releases the marker when the completing request still owns it (epoch unchanged), preserving per-stream dedup and concurrency accounting. Tests: unscoped duplicate-slot collapse; stale request preserving a fresh in-flight marker. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>