The `fromMe` flag from Baileys' WAMessage.key was only used for
access-control filtering and then discarded. This meant agents
could not distinguish owner-sent messages from contact messages
in DM conversations (everything appeared as from the contact).
Add `fromMe` to `WebInboundMessage`, store it during message
construction, and thread it through `buildInboundLine` →
`formatInboundEnvelope` so DM transcripts prefix owner messages
with `(self):`.
Closes#32061
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace verbose formatUserTime (Wednesday, January 28th, 2026 — 8:30 PM)
with the same formatZonedTimestamp used by channel envelopes (2026-01-28
20:30 EST). This:
- Saves ~4 tokens per message (~7 vs ~11)
- Uses globally unambiguous YYYY-MM-DD 24h format
- Removes 12/24h config option (always 24h, agent-facing)
- Anchors envelope detection to the actual format function — if channels
change their timestamp format, our injection + detection change too
- Adds test that compares injection output to formatZonedTimestamp directly
Exported formatZonedTimestamp from auto-reply/envelope.ts for reuse.
