feat(runtime): add Paseo action adapter

[4mGLn]

Outcome

• Adds the versioned Unix weft-paseo-action lifecycle adapter and aligns bridge metadata with weft.cli.v1.
• Includes isolated-workspace acquisition, checkpoint, session-replacement, and release proof.

Evidence

• make check passed locally: documentation, QA harness self-test, formatting, workspace tests, strict Clippy, and Paseo/session-resume lifecycle proofs.

Residual gaps

• GitButler live-provider proof remains explicitly unavailable; the declared-version fixture suite passed.

[chatgpt-codex-connector]

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