chore: seed repo with .gitignore, .env.example, README skeleton

Initial commit. Establishes:
- .gitignore: .env (secrets), .venv, __pycache__, runtime dirs
  (logs/, state/, queue/, dispatch/). Removes the duplicate .env
  entry and the .env.example exclusion that was preventing the
  example file from being tracked.
- .env.example: ANTHROPIC_API_KEY/MODEL placeholders, NTFY_TOPIC
  (auto-generated on first run), STATUS_PORT, HISTORY_CHAR_CAP.
- README: install + run quickstart.

The daemon implementation lands on a feature branch.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,19 @@
+# Secrets and runtime state — never committed
+.env
+.venv/
+__pycache__/
+*.pyc
+*.pyo
+*.egg-info/
+
+# Daemon runtime directories — created on first run, contents are
+# session-specific and not meaningful to track.
+logs/
+state/
+queue/
+dispatch/
+
+# Editor / OS noise
+.idea/
+.vscode/
+.DS_Store