clean up

discussion/index.ndjson

@@ -8,7 +8,7 @@
 {"type":"discussion","id":"DSC-0001","status":"done","ticket":"studio-docs-import","title":"Import docs/studio into discussion-framework artifacts","created_at":"2026-03-26","updated_at":"2026-03-26","tags":["studio","migration","discussion-framework","docs-import"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0001","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0001-assets-workspace-execution-wave-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0002","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0002-bank-composition-editor-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0003","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0003-mental-model-asset-mutations-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0004","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0004-mental-model-assets-workspace-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0005","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0005-mental-model-studio-events-and-components-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0006","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0006-mental-model-studio-shell-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0007","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0007-pack-wizard-shell-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0008","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0008-project-scoped-state-and-activity-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0016","file":"discussion/lessons/DSC-0001-studio-docs-import/LSN-0016-studio-docs-import-pattern.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"}]}
 {"type":"discussion","id":"DSC-0002","status":"done","ticket":"palette-management-in-studio","title":"Palette Management in Studio","created_at":"2026-03-26","updated_at":"2026-04-23","tags":["studio","legacy-import","palette-management","tile-bank","packer-boundary"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0042","file":"discussion/lessons/DSC-0002-palette-management-in-studio/LSN-0042-schema-driven-palette-authoring-and-local-metadata-events.md","status":"done","created_at":"2026-04-23","updated_at":"2026-04-23"}]}
 {"type":"discussion","id":"DSC-0003","status":"done","ticket":"packer-docs-import","title":"Import docs/packer into discussion-framework artifacts","created_at":"2026-03-26","updated_at":"2026-03-26","tags":["packer","migration","discussion-framework","docs-import"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0009","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0009-mental-model-packer-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0010","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0010-asset-identity-and-runtime-contract-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0011","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0011-foundations-workspace-runtime-and-build-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0012","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0012-runtime-ownership-and-studio-boundary-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0013","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0013-metadata-convergence-and-runtime-sink-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0014","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0014-pack-wizard-summary-validation-and-pack-execution-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0015","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0015-tile-bank-packing-contract-legacy.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"},{"id":"LSN-0017","file":"discussion/lessons/DSC-0003-packer-docs-import/LSN-0017-packer-docs-import-pattern.md","status":"done","created_at":"2026-03-26","updated_at":"2026-03-26"}]}
-{"type":"discussion","id":"DSC-0004","status":"open","ticket":"tilemap-and-metatile-runtime-binary-layout","title":"Tilemap and Metatile Runtime Binary Layout","created_at":"2026-03-26","updated_at":"2026-03-26","tags":["packer","legacy-import","tilemap","metatile","runtime-layout"],"agendas":[{"id":"AGD-0004","file":"AGD-0004-tilemap-and-metatile-runtime-binary-layout.md","status":"open","created_at":"2026-03-26","updated_at":"2026-03-26"}],"decisions":[],"plans":[],"lessons":[]}
+{"type":"discussion","id":"DSC-0004","status":"abandoned","ticket":"tilemap-and-metatile-runtime-binary-layout","title":"Tilemap and Metatile Runtime Binary Layout","created_at":"2026-03-26","updated_at":"2026-04-24","tags":["packer","legacy-import","tilemap","metatile","runtime-layout"],"agendas":[{"id":"AGD-0004","file":"AGD-0004-tilemap-and-metatile-runtime-binary-layout.md","status":"abandoned","created_at":"2026-03-26","updated_at":"2026-04-24","_override_reason":"Explicit user request on 2026-04-24 to abandon AGD-0004 because the agenda is no longer valid."}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0005","status":"open","ticket":"variable-tile-bank-palette-serialization","title":"Variable Tile Bank Palette Serialization","created_at":"2026-03-26","updated_at":"2026-03-26","tags":["packer","legacy-import","tile-bank","palette-serialization","versioning"],"agendas":[{"id":"AGD-0005","file":"AGD-0005-variable-tile-bank-palette-serialization.md","status":"open","created_at":"2026-03-26","updated_at":"2026-03-26"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0006","status":"done","ticket":"pbs-game-facing-asset-refs-and-call-result-discard","title":"PBS Game-Facing Asset References and Ignored Call Result Lowering","created_at":"2026-03-27","updated_at":"2026-03-30","tags":["compiler","pbs","ergonomics","lowering","runtime","asset-identity","expression-statements"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0024","file":"discussion/lessons/DSC-0006-pbs-game-facing-asset-refs-and-call-result-discard/LSN-0024-addressable-surface-host-metadata-and-ignored-value-discipline.md","status":"done","created_at":"2026-03-30","updated_at":"2026-03-30"}]}
 {"type":"discussion","id":"DSC-0007","status":"done","ticket":"pbs-learn-to-discussion-lessons-migration","title":"Migrate PBS Learn Documents into Discussion Lessons","created_at":"2026-03-27","updated_at":"2026-03-27","tags":["compiler","pbs","migration","discussion-framework","lessons","learn-prune"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0018","file":"discussion/lessons/DSC-0007-pbs-learn-to-discussion-lessons-migration/LSN-0018-pbs-ast-and-parser-contract-legacy.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"},{"id":"LSN-0019","file":"discussion/lessons/DSC-0007-pbs-learn-to-discussion-lessons-migration/LSN-0019-pbs-name-resolution-and-linking-legacy.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"},{"id":"LSN-0020","file":"discussion/lessons/DSC-0007-pbs-learn-to-discussion-lessons-migration/LSN-0020-pbs-runtime-values-identity-memory-boundaries-legacy.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"},{"id":"LSN-0021","file":"discussion/lessons/DSC-0007-pbs-learn-to-discussion-lessons-migration/LSN-0021-pbs-diagnostics-and-conformance-governance-legacy.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"},{"id":"LSN-0022","file":"discussion/lessons/DSC-0007-pbs-learn-to-discussion-lessons-migration/LSN-0022-pbs-globals-lifecycle-and-published-entrypoint-legacy.md","status":"done","created_at":"2026-03-27","updated_at":"2026-03-27"}]}

discussion/workflow/agendas/AGD-0004-tilemap-and-metatile-runtime-binary-layout.md

@@ -1,97 +0,0 @@
----
-id: AGD-0004
-ticket: tilemap-and-metatile-runtime-binary-layout
-title: Tilemap and Metatile Runtime Binary Layout
-status: open
-created: 2026-03-26
-resolved:
-decision:
-tags:
-  - packer
-  - legacy-import
-  - tilemap
-  - metatile
-  - runtime-layout
----
-
-## Pain
-
-The repository has conceptual alignment around map responsibility split and active-window residency, but still lacks a closed runtime binary contract for handheld maps.
-
-Without a canonical decision:
-
-- packer cannot close the output specification for map artifacts;
-- runtime lacks one stable reading baseline;
-- Studio cannot align authoring and preview schemas with one binary target.
-
-## Context
-
-Legacy source: `docs/packer/agendas/Tilemap and Metatile Runtime Binary Layout Agenda.md`
-
-Domain owner: `docs/packer`
-Cross-domain impact:
-
-- `docs/vm-arch`
-- `docs/studio`
-- `docs/compiler/pbs`
-
-Current discussion premises retained from source:
-
-- visual and collision concerns should remain separated;
-- map cells should not duplicate large metadata per tile;
-- only a `3x3` active window of maps should remain resident in memory;
-- a `64 KiB` target budget per map bank has been discussed;
-- `map bank` and `tileset bank` do not need identical size rules.
-
-## Open Questions
-
-- [ ] Is `collisionId` with `5` bits (`32` classes) sufficient for expected projects?
-- [ ] Should `flag0` be reserved for fast trigger semantics or contextual visual variation?
-- [ ] Which optional chunks belong in `V1`, and which should wait for a later version?
-- [ ] Must `map bank` stay strictly at `64 KiB`, or should capacity be variable with explicit metadata?
-- [ ] What compression policy should the packer adopt by default for the stream?
-
-## Options
-
-### Option A - `u8` cells with auxiliary tables
-- **Approach:** Store only one `metatileId` per cell and derive collision/flags from side tables.
-- **Pro:** Smallest RAM and I/O footprint.
-- **Con:** Pushes too much semantic meaning into external lookup tables.
-- **Maintainability:** Medium.
-
-### Option B - `u16` bit-packed cells
-- **Approach:** Use `16` bits per cell, with a compact split such as `visualId`, `collisionId`, and `flag0`.
-- **Pro:** Balances compactness, deterministic decoding, and enough expressivity for many handheld cases.
-- **Con:** Leaves less room for inline per-cell growth than `u32`.
-- **Maintainability:** Strong.
-
-### Option C - `u32` cells
-- **Approach:** Use larger cells to keep more event/flag space inline.
-- **Pro:** Highest flexibility for per-cell triggers and future expansion.
-- **Con:** Doubles memory cost versus `u16` without current evidence that it is needed.
-- **Maintainability:** Weak for the current budget target.
-
-## Discussion
-
-The retained source already converged toward `u16` as the best baseline.
-
-The suggested runtime shape is:
-
-- fixed map header;
-- contiguous cell stream;
-- optional future-proof chunks.
-
-The proposed `U16_PACKED_V1` split keeps visual and collision references compact while preserving predictable memory usage and straightforward streaming behavior for a handheld target.
-
-## Resolution
-
-Recommended direction: adopt **Option B** as the baseline.
-
-Imported retained recommendation:
-
-1. authorship stays JSON-oriented around compact ids;
-2. build output packs deterministically into `U16_PACKED_V1`;
-3. runtime active-window budget remains explicit;
-4. any move to `u32` should happen only through a later versioned encoding with evidence of need.
-
-Next step suggestion: convert this agenda into a decision that closes `U16_PACKED_V1`, propagation to `docs/vm-arch`, Studio editing schema alignment, and implementation planning for roundtrip tests.