0.1.89: improve project workflow and approval routing

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Summary

• improve the project workflow UI and transcript navigation
• route project approvals and follow-up responses through the project command path
• ship the completed UI work as AgencyZero 0.1.89

Verification

• bun run typecheck
• bun run lint
• bun run test:run (320 passed)
• bun run build
• cargo fmt --all --check
• cargo clippy --workspace --all-targets --all-features -- -D warnings
• cargo test --workspace --all-features

The final cargo build command was stopped at the owner's request after the test suite completed.