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FE-709: Planning sync β€” Conversational Workspace Runtime umbrella frontier decomposition#135

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FE-709: Planning sync β€” Conversational Workspace Runtime umbrella frontier decomposition#135
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Summary

Planning baseline that decomposes the Conversational Workspace Runtime umbrella (docs/design/CONVERSATIONAL_WORKSPACE_RUNTIME.md) into frontier items in memory/PLAN.md. Drafted off ln/fe-705-extensions so the diff inherits Lu's new PLAN.md format and shows only the umbrella additions (not the format migration).

Why this is a separate planning PR

Per the planning-pr skill convention:

  • Edit establishes a planning baseline that several implementation branches should rebase onto before continuing.
  • Frontier Definitions migration (three new frontier definitions added).
  • Sequencing reshuffle (continuous-workspace done; Track 2/3/5 inserted; v4a retired).

Changes

  • Context paragraph: names the umbrella + its 5 sub-tracks.
  • Sequencing:
    • Active: continuous-workspace removed (done as FE-709).
    • Next: chat-runtime-threads (Track 2), thread-context-provision (Track 5), reconciliation-runtime (Track 3) inserted at appropriate positions.
    • Horizon: side-chat-persistence-v4a removed (superseded by Track 2).
  • Three new frontier definitions added:
    • chat-runtime-threads β€” Track 2; thread substrate + in-stream rendering.
    • reconciliation-runtime β€” Track 3; async-by-default classifier with in-stream thread.
    • thread-context-provision β€” Track 5; TOON serializer, `#` mention, turn-zero.
  • `continuous-workspace` frontier: Linear=FE-709, Status=done.
  • Recently Completed: FE-709 entry for the workspace shell.
  • Dependencies block: TRACK A restructured as the umbrella; `side-chat-persistence-v4a` moved to new RETIRED section.

Status

Draft. Linear issue is TBD. Will be promoted to ready-for-review once Lu's #132 + #133 land on main, at which point this PR's base can be retargeted to `main` (or recreated from `main` if cleaner).

Open questions still inherited from the umbrella

  • Thread substrate shape: (p) `parent_chat_id` on `chat` / (q) new `thread` table / (r) UI-only rendering. Sub-RFC under Track 2 will decide.
  • Reconciliation thread lifecycle, direct-edit thread-opening UX, TOON library choice. Deferred to per-track design.

Test plan

  • PR base updates cleanly when Lu's stack merges.
  • No SPEC.md edits in this PR.
  • No code edits in this PR.
  • After merge, downstream branches (none yet open against umbrella tracks) restack onto the new main.

πŸ€– Generated with Claude Code

Planning baseline for the umbrella's frontier-item decomposition. Adds
three new frontier definitions for the runtime tracks not yet captured
in PLAN.md (Tracks 2/3/5), flips continuous-workspace to done after
FE-709, and retires side-chat-persistence-v4a as superseded by Track 2.

This is a draft planning PR β€” Linear issue TBD. Per planning-pr
convention: planning baselines for shared downstream branches go on
a separate planning branch off main (here, off ln/fe-705-extensions
so it inherits the new PLAN.md format from Lu's stack and shows only
the umbrella additions in the diff).

Changes:
- Context paragraph: name the umbrella + its 5 sub-tracks
- Sequencing: continuous-workspace done; insert chat-runtime-threads,
  thread-context-provision, reconciliation-runtime into Next
- Three new frontier definitions: chat-runtime-threads (Track 2),
  reconciliation-runtime (Track 3), thread-context-provision (Track 5)
- continuous-workspace: Linear=FE-709, Status=done
- Horizon: side-chat-persistence-v4a removed (superseded)
- Recently Completed: FE-709 entry
- Dependencies: TRACK A restructured as the umbrella; RETIRED section
  added for v4a

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@kostandinang kostandinang changed the title FE-7XX: Planning sync β€” Conversational Workspace Runtime umbrella frontier decomposition FE-709: Planning sync β€” Conversational Workspace Runtime umbrella frontier decomposition May 13, 2026
@kostandinang kostandinang deleted the ka/fe-7xx-runtime-umbrella-planning-sync branch May 13, 2026 18:33
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