feat(cli): add clean analysis export with markdown/json output

CHANGELOG.md

@@ -15,15 +15,20 @@ ______________________________________________________________________
   - `--session-memory` option on `tai run`
   - prior-session retrieval injected into analysis/follow-up prompts
   - final response indexing at session end
+- `--output-file` option on `tai run` to persist final AI analysis output as Markdown
+- `--output-format markdown|json` for `--output-file` exports
 - Planner enhancements for broader service detection:
   - generic service candidate extraction from free text
   - package presence probes in plans (`rpm -q` and `dpkg-query -W`)
 - SSH read-only allowlist expanded to permit package presence commands (`rpm`, `dpkg-query`)
 - Session memory tests in `tests/test_session_store.py`
+- CLI test coverage for analysis output file writing (`tests/test_cli.py`)
+- CLI test coverage for JSON export and ANSI stripping in written output (`tests/test_cli.py`)
 
 ### Changed
 
 - Documentation alignment updates in README and ROADMAP to reflect implemented session memory and package-presence capabilities.
+- Package version metadata alignment: `src/tai/__init__.py` now matches project version `0.4.0`.
 
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