Implement WARDEN-WP-0024 experiential memory and agent sessions.

Add phase-memory bridge, warden memory CLI, route/access/sign recording,
memory-aware worker planning with OpenRouter skip, tests, wiki, and AGENTS.md
orientation for Claude, Codex, Grok, and future agent sessions.

pyproject.toml

@@ -13,6 +13,9 @@ dependencies = [
     "httpx>=0.27",
 ]
 
+[project.optional-dependencies]
+memory = []
+
 [project.scripts]
 warden = "warden.cli:app"
 ops-ssh-wrapper = "warden.scripts.ops_ssh_wrapper:main"
@@ -29,7 +32,7 @@ packages = ["src/warden"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
-pythonpath = ["src"]
+pythonpath = ["src", "../phase-memory/src"]
 addopts = "-m 'not integration'"
 markers = ["integration: requires ssh-keygen binary; run with pytest -m integration"]