- Changed the link grammar from `<roomId>#<key>` / `host[:port]/r/<roomId>#<key>` to dot-joined `<roomId>.<key>` in `formatCollabLink`/`parseCollabLink` (`packages/coding-agent/src/collab/protocol.ts`) and the collab-web mirror (`packages/collab-web/src/lib/link.ts`): RFC 3986 forbids a raw `#` inside a fragment, so strict URL stacks (macOS Foundation behind terminal click-to-open) percent-encoded the second `#`.
- Kept legacy `#`-joined links parseable via `BARE_LINK_RE` and added lenient `%23` → `#` decoding for mangled deep links.
- Updated the `ConnectScreen` placeholder, `app.tsx` deep-link comment, `DEFAULT_RELAY_URL` doc in `packages/wire`, `docs/collab.md` examples, and both package CHANGELOGs.
- Extended `crypto.test.ts` and `link.test.ts` with dot-joined, legacy-hash, and `%23`-mangled link coverage.
- Changed `DEFAULT_RELAY_URL` in `@oh-my-pi/pi-wire` from `wss://relay.omp.sh` to `wss://my.omp.sh` and updated the constants, collab-link, and join-command tests asserting the old origin.
- Added `DEFAULT_SHARE_URL` (`https://my.omp.sh/s`) to pi-wire with its changelog entry; it shares a changed run with the relay constant and is consumed by the upcoming /share work.
- Updated collab-web canonical/OG/twitter URLs in `index.html`, `robots.txt`, `sitemap.xml`, README, and the `local-relay.ts` doc comment to the new domain.
- Refreshed the `/collab` entry in the coding-agent changelog to reference the new relay origin.
- Added write-token generation and validation to distinguish writable and read-only guests.
- Added deep-link support using `https://<relay>/#<link>` with 32/48-byte collab secrets.
- Added full-link and key-only semantics where full links grant writes and key-only links are view-only.
- Added /collab view/status/stop command updates with read-only participant status and join hints.
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