fix(aider,openhands): close client on exit + OpenHands Docker MCP docs

[DK09876]

Polish from the real-app integration test sweep (separate from the Devin Desktop rename + Continue fix in #2410).

aider — close the client on exit

The wrapper opened a Hindsight client (aiohttp session) and never closed it, so aider printed Unclosed connector warnings on exit. Now run() closes the client when it owns it (a test/caller-injected client is left alone). Regression tests cover both paths. Bump hindsight-aider → 0.1.1.

openhands — document the Docker-app MCP path

Real testing showed the OpenHands Docker app ignores the project config.toml our init writes — it only loads MCP from UI settings — and adding the server as SSE silently fails (Hindsight's endpoint is Streamable HTTP). Added:

• a README section telling Docker users to add the server in Settings → MCP as Streamable HTTP via host.docker.internal, and
• the same hint printed by init.

Bump hindsight-openhands → 0.1.1.

Verification

• aider: 36 tests pass (2 new) · openhands: 27 pass · ruff check + format clean
• Both findings came from driving the real apps (aider CLI; OpenHands in OrbStack)

Not included here (tracked separately)

• MCP tool-selection dilution — across Copilot/Zed/Devin/OpenHands the agent only reliably calls recall when explicitly nudged (29 tools + a soft rule). This is a design decision (stronger instruction vs. trimmed toolset) and deserves its own discussion/PR.
• Devin Desktop "click Connect" doc note — deferred until the rename PR feat(devin-desktop): rename Windsurf→Devin Desktop + fix(continue) thread-safe adapter #2410 lands (the devin-desktop dir doesn't exist on main yet).

🤖 Generated with Claude Code

[benfrank241]

The two red checks here aren't from this PR — they're pre-existing breakage on main, and this branch is level with it. This diff only touches the aider/openhands packages, but both failures are in files it never modifies:

• verify-generated-files — hindsight-api-slim/tests/test_retain_append_mode.py:45 has an unused local v2_units (F841). The job runs lint.sh, which auto-removes it, producing a diff. Fix: drop the assignment (or run ./scripts/hooks/lint.sh).
• test-doc-examples (cli) — hindsight-cli/src/commands/mental_model.rs (lines 120 and 198) is missing the refresh_cron field that was added to the generated MentalModelTriggerInput, so the CLI no longer compiles. Fix: set refresh_cron: None in both initializers.

Both currently block every open PR. Worth a tiny standalone fix PR against main. The actual changes in this PR — closing the aider-owned client in a finally (leaving caller-injected clients alone, with tests for both paths) and the OpenHands Docker MCP docs — look good and are appropriately scoped.