[QueryPlanner]

What

Remove the Zepto integration and its host-side Node MCP bridge from Blacki. This PR is rebased onto main after #191 merged.

Why

Zepto is no longer needed. Removing it also drops the Node runtime and bridge-only deployment settings while retaining generic ADK MCP skill support.

How

• Delete Zepto auth, client, tool, skill, bridge package, docs, and tests.
• Remove Zepto config, environment, workflow, privacy, prompt, and deployment references.
• Generalize pending-tool confirmation wording and preserve generic MCP and Gmail behavior.
• Remove the Node stage and Zepto-only runtime libraries from the production image.
• Preserve the direct agent_browser tool, task-worker removal, Chromium/agent-browser sandbox image, and sandbox boundary from feat: add direct browser tool and drop worker #191.

Rebase

• Rebased onto main at 5d1a049 after feat: add direct browser tool and drop worker #191 was squash-merged.
• The rebased tree is identical to the previously validated stacked revision (26e6866).

Tests

• uv run ruff format --check
• uv run ruff check
• uv run mypy . (212 source files)
• uv run pytest --cov=src (2,032 passed, 0 skipped, 100% line and branch coverage)
• uv run --no-sync mkdocs build --strict
• uv run pytest tests/test_deployment_contract.py (28 passed)
• bash -n setup.sh entrypoint.sh
• docker compose -f compose.yaml -f compose.prod.yaml config --quiet
• Production image built as blacki-stacked-test:latest
• Isolated Compose /ready smoke test passed on attempt 2

Related Issues

• Follows feat: add direct browser tool and drop worker #191, which is merged.

[QueryPlanner]

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Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	⚠️ Failed 2026-10-21T15:55:56.616952Z We couldn’t complete this review. Comment @codex review to try again.	26e6866	Manual request

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