Finalize Cockpit command center concepts

[smota]

Summary

Finalizes the non-Docker Cockpit Goal Command Center work after the merged grooming sequence.

This PR adds the durable concept/rules document requested for reviewing SDLC roles, skills, and agents, and carries the post-merge Cockpit UX/model refinements that were developed after PR #155:

• Workspace selector with Switch, onchange, and URL-backed repo= preservation.
• URL-backed dashboard views: Goals, Releases, Reviews, Follow-ups.
• Release filters: unreleased, released, all, needs-assignment, and future specific release= support.
• Release assignment states and hygiene queue for issues needing release assignment.
• Release candidate source rules that avoid incidental package/runtime versions.
• Goal detail header grammar and source/action separation.
• Readiness icon/color state treatment.
• Goal Story Replay navigation and chronological timeline.
• Guided workflow actions replacing vague guarded-action framing.
• Human approval gate terminology and status model.
• docs/cockpit-concepts-and-rules.md as source material for SDLC role/skill/agent review.

Docker deployment remains intentionally excluded.

Concepts/rules document

Added:

• docs/cockpit-concepts-and-rules.md

It defines:

• Workspace, view, and release navigation axes.
• Release candidate, impact, assignment, and filter rules.
• Goal hierarchy and detail model.
• Selected Path and path-aware Readiness Health rules.
• Human approval gate semantics.
• Goal Story Replay semantics.
• Guided workflow actions.
• Fail-safe/source rules.

Implemented issues

Closes #147
Closes #156
Closes #125
Closes #119

Related issues

Related closed implementation issues covered by the previous and current Cockpit sequence: #127, #134, #135, #136, #137, #138, #139, #148, #149, #150, #151, #152, #153, #154, #157, #158, #159, #160, #161.

Docker deployment remains out of scope and should stay in a separate follow-up pass.

Workflow evidence

Workflow-status comment: exception: evidence recorded in this PR body and merged Cockpit issue/PR history; no separate issue comment posted for this finalization pass.

Handover comments: exception: user requested direct commit/push/PR/merge execution in current session; this PR body is the handover record.

Role-pass summary:

• Product/UX review: user-provided review identified workspace switching, release filters, release assignment hygiene, guided actions, and human approval gate clarity.
• Implementation: single-agent pi-parent updated model, UI, server routing, tests, and docs.
• Documentation: added docs/cockpit-concepts-and-rules.md for SDLC role/skill/agent review.
• Review: self-review verified non-Docker scope and URL-backed workspace/view/release behavior.

Validation evidence:

• pnpm test passed: 21 files / 138 tests.
• Cockpit server smoke /healthz passed: 200.
• Multi-repo env smoke used AGENTFLOW_REPOSITORIES=smota/agentflow-sdlc,smota/other-repo.

Agent review

• Implemented by: pi
• Launcher: pi
• Executor: pi-parent
• Transport: local-cli
• Delegation boundary: current-session
• Model / runtime: gpt-5.5 / pi session 019fa720-d518-7d59-b8d1-048a0612ad80
• Review: self-review
• Workflow profile: standard
• Merge owner: human/operator
• Mode: single-agent
• Self-review disclosure: Same agent implemented and reviewed; validation is command-backed, but no independent review was run for this finalization pass.

CI-equivalent validation

• Status: passed
  Commands:
• pnpm prettier --write docs/cockpit.md docs/cockpit-concepts-and-rules.md
• pnpm test
• Cockpit server smoke via Node child process and /healthz fetch.

Follow-up issues

No new follow-up issue opened in this pass. Docker deployment/runtime packaging remains excluded from this PR and should continue in the existing Docker/second-pass workstream rather than this non-Docker closeout.

Out of scope

• Docker deployment/runtime packaging.
• Additional public README/docs IA issues not directly changed by this Cockpit finalization pass.