Land Phase 0 launch chain: SSH -> desktop Terminal -> claude -> phone

Phase 0 proven by hand (N=3) across multiple rooms.

- scripts/gui-launch.sh: open a desktop Terminal via osascript so claude runs in
  the GUI session (login Keychain + real TTY), avoiding a long-lived token (D11).
- scripts/launch-claude.sh: name the session `claude -n "<repo> - <topic>"` so
  Remote Control's phone conversation index is readable.
- .env.example: bot credential schema (real .env stays gitignored).
- AGENTS.md / ROADMAP.md: D11, Phase 0 results, Phase 1 carry-overs.

.env.example

@@ -0,0 +1,10 @@
+# matrix-bridge bot credentials — COPY to .env (gitignored) and fill in real values.
+# Never commit real values. The bot runs on the Spark; the real .env lives next to it there.
+
+MATRIX_HOMESERVER=https://<your-synapse-host>
+MATRIX_USER=@<bot>:<your-domain>
+MATRIX_DEVICE_ID=matrix-bridge-bot
+MATRIX_ACCESS_TOKEN=
+# Optional — kept for recovery / re-minting a token. The bot authenticates with the access token,
+# not the password (logging in every start would spawn a new device each time).
+MATRIX_PASSWORD=