FE-692: Planning groundwork

[lunelson]

Reconciles intent-spec planning groundwork on top of FE-691's multi-chat substrate, making MULTI_CHAT the concrete phase-one design and leaving PATCH_LEDGER as deeper future semantic mutation guidance.

Updates MULTI_CHAT to use reconciliation_need, a softer dual-pointer migration, primary_chat_id / chat.active_turn_id, caused_by_turn_id plus nullable caused_by_patch_id, and to supersede older side-chat substrate assumptions.

Syncs canonical SPEC/PLAN with non-colliding IDs: Requirement 39, A79-A80, D138, and I111; PLAN now treats multi-chat substrate + reconciliation needs as the active frontier, with continuous workspace next.

Keeps INTENT_SPEC_EVOLUTION and archived REVISIT references linked to MULTI_CHAT/PATCH_LEDGER so revisit/cascade, edge semantics, and future patch ledger point at the correct design layer.

Verification: npm run verify.

[linear-code]

FE-692 Planning enablement for upcoming features

Review in Linear

[lunelson]

• FE-692: Planning groundwork #91 👈 (View in Graphite)
• FE-691: Multi-chat substrate — chat table + reconciliation_edge #90 : 1 other dependent PR (#97 )
• FE-656: V1.2-E — Floating selection menu and active-card chat context #93
• FE-656: Side-chat V1.2-G — Figma brand-surface polish #89
• FE-656: Side-chat V1.2 — vertical slice (annotate) #88
• FE-656: Side-chat V1.1 — design spec + Explore vertical slice #81
• main

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[cursor]

PR Summary

Low Risk
Documentation-only changes that reframe the planning/design frontier; no runtime or schema changes are introduced, so risk is limited to potential reviewer confusion if guidance is misinterpreted.

Overview
Updates the project’s planning/design documentation to make MULTI_CHAT.md the concrete Phase 1 proposal (chat containers + reconciliation_need) and position PATCH_LEDGER.md as the longer-term semantic mutation/changeset follow-on.

Rewrites memory/PLAN.md to treat the multi-chat substrate + reconciliation queue as the active infrastructure frontier (with continuous workspace next) and reshapes the horizon items around intent-spec ontology, edge semantics policy, and a future patch ledger.

Archives older design notes (REVISIT_MODULE, WORKFLOW_OWNERSHIP) with clearer “historical-only” disclaimers, adds docs/design/README.md to formalize canonical-vs-design-doc guidance, and appends the associated plan-history sync entry.

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[augmentcode]

🤖 Augment PR Summary

Summary: This PR reconciles and promotes recent intent-spec / patch-ledger design groundwork into canonical project memory, while archiving superseded design notes.

Changes:

• Updates memory/PLAN.md to narrow the active frontier to continuous workspace, and captures new horizon work around intent graphs, reconciliation, chat containers, and semantic changesets/patches.
• Updates memory/SPEC.md to explicitly shift direction from planning specs toward intent specs, adds Requirement 38, and records new assumptions/decisions on progressive checkability, invariants/examples, reconciliation needs, and patch history.
• Adds new design docs: docs/design/INTENT_SPEC_EVOLUTION.md (raw synthesis) and docs/design/PATCH_LEDGER.md (working proposal), plus docs/design/README.md boundary guidance.
• Archives superseded design notes under docs/archive/design/ and updates cross-doc links accordingly.
• Adds DB schema diagram artifacts (docs/design/schema.dbml / schema.dbdiagram) as supporting design/reference material.

Technical Notes: Documentation-only change set; PR description indicates verification via npm run verify. Be mindful of keeping schema reference artifacts from diverging over time.

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[augmentcode]

Review completed. 2 suggestions posted.

Comment augment review to trigger a new review at any time.

[kostandinang]

Three follow-ups against the reconcile, 2 questions on meeting outcomes, one copy-edit.

[lunelson]

Merge activity

• May 6, 4:48 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• May 6, 4:48 PM UTC: Graphite couldn't merge this pull request because a downstack PR FE-656: Side-chat V1.1 — design spec + Explore vertical slice #81 failed to merge.

Latest approval commit 9f3f4ec is not an ancestor of 64f073e, indicating rewritten history after approval

Latest approval commit 64f073e is not an ancestor of 43af44d, indicating rewritten history after approval