docs: update worker protocol for v0.8 console data plane

[spytensor]

Summary

Updates the repo worker protocol for the active v0.8 Console Data Plane milestone and removes the remaining old spytensor/codeRoom issue-template links.

Architecture impact

• No change — purely follows docs/architecture.md as written.
• Refines an open question — links to its entry in docs/proposed-amendments.md.
• Amends a locked decision — must include the amendment in docs/proposed-amendments.md and reference it here.

Linked issues

Closes #241

Acceptance criteria

• AC-1: Update AGENTS.md active milestone to v0.8.0 - CoreRoom Console Data Plane and primary tracker v0.8.0 - CoreRoom Console Data Plane Tracker #238.
• AC-2: State that v0.9 issues are future backlog and must not be picked up unless explicitly re-scoped by the user.
• AC-3: Update branch naming for v0.8 issues to feat/v0.8-<issue-number>-<short-slug>.
• AC-4: Update tracker rules from v0.7.0 - CoreRoom GitHub-native Engineering Loop Tracker #213 to v0.8.0 - CoreRoom Console Data Plane Tracker #238.
• AC-5: Update .github/PULL_REQUEST_TEMPLATE.md tracker section so it no longer hard-codes v0.7/v0.7.0 - CoreRoom GitHub-native Engineering Loop Tracker #213.
• AC-6: Add console-specific evidence expectations: snapshot/fixture evidence for console/view-model changes, and no model-prose completion.
• AC-7: Fix any obvious v0.7/old repo rename residue found while touching protocol files.

Test plan

• git diff --check passes
• cargo fmt --all -- --check passes — not run; docs/template-only change
• cargo clippy --all-targets --all-features -- -D warnings passes — not run; docs/template-only change
• cargo test --all-features --locked passes — not run; docs/template-only change
• Manual smoke: not applicable

Evidence packet

• WorkOrder: v0.8: Update AI worker protocol and tracker evidence rules #241
• Gate thread: none; protocol/tracker update only
• Changed files: AGENTS.md, .github/PULL_REQUEST_TEMPLATE.md, .github/ISSUE_TEMPLATE/config.yml
• Commands run: git diff --check; rg -n "v0\.7 issues|#213|spytensor/codeRoom|Do not pick up v0\.8|active v0\.7|feat/v0\.7" AGENTS.md .github/PULL_REQUEST_TEMPLATE.md .github/ISSUE_TEMPLATE/config.yml
• Test/check results: git diff --check passed; targeted rg found only the historical statement that v0.7 tracker v0.7.0 - CoreRoom GitHub-native Engineering Loop Tracker #213 is complete
• Snapshot/fixture evidence, if console/status/view-model/host output changed: not applicable
• Role reviews: not applicable
• Risks: low; docs/templates only
• Rollback: revert this PR
• Unverified items: no CI result yet at PR creation time

Tracker update

• Tracker issue: v0.8.0 - CoreRoom Console Data Plane Tracker #238
• Issue checkbox updated:
  • yes
  • no, reason: PR is in review; checkbox should be ticked after merge
• Milestone AC updated, if applicable:
  • yes
  • no, reason: no M-AC fully satisfied until this PR merges
• Evidence Ledger row updated:
  • yes
  • no, reason:

Risk and rollback

• Risk: low; stale AI worker instructions could continue pointing to v0.7 if this does not merge.
• Rollback: revert this PR to restore the prior v0.7 protocol.

Out of scope

• No CoreRoomSnapshot schema implementation.
• No console renderer.
• No v0.9 issue implementation.