Update roadmap status for completed Preview Generator V2 work - PR_26126_050-preview-generator-v2-roadmap-status

Author: DavidQ

docs/dev/reports/preview_generator_v2_roadmap_update.txt

@@ -0,0 +1,37 @@
+PR_26126_050 Preview Generator V2 roadmap status
+
+Scope
+- Reviewed docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md for existing Preview Generator V2 roadmap entries.
+- No code, samples, schemas, or start_of_day files were modified.
+- No roadmap text was added or rewritten.
+
+Roadmap findings
+- No existing `Preview Generator V2` roadmap item was found in docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md.
+- No existing `preview-generator-v2` roadmap item was found in docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md.
+- The existing preview-related roadmap items are already complete and refer to Asteroids preview/direct launch behavior, not Preview Generator V2:
+  - `[x] Asteroids preview direct launch separation from Workspace Manager remains valid.`
+  - `[x] Direct game launch hook removal prevents normal preview redirects to Workspace Manager.`
+- The remaining incomplete roadmap markers in MASTER_ROADMAP_ENGINE.md are unrelated Level 8 cleanup/tool-alignment items:
+  - `[ ] Verify palette/shared data never embeds inside tool payload files.`
+  - `[.] Verify workspace schema has no sample-only concepts.`
+  - `[.] Unused JSON cleanup audit (tools + explicit deletion candidates) is in progress.`
+  - `[.] Palette opaque alpha normalization (#RRGGBBFF -> #RRGGBB) is in progress.`
+  - `[.] Tool-owned JSON asset input wiring for extracted code-defined assets is in progress.`
+  - `[.] Hardcoded color/shape removal plan is in progress.`
+
+Status update decision
+- No MASTER_ROADMAP_ENGINE.md status marker was changed.
+- Reason: this PR allows only existing status marker transitions and explicitly forbids adding roadmap items or modifying roadmap text.
+- Adding a new Preview Generator V2 item would violate the PR requirements.
+- Changing unrelated incomplete Level 8 items would misrepresent their actual status.
+
+Validation
+- `rg -n -i -C 3 "preview|generator|tool" docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md` was used to inspect relevant roadmap references.
+- `rg -n "\\[ \\]|\\[\\.\\]" docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md` was used to inspect incomplete roadmap markers.
+- `git diff -- docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md` has no output.
+- No samples, schemas, or start_of_day files were modified.
+
+Manual validation
+- Open docs/dev/roadmaps/MASTER_ROADMAP_ENGINE.md.
+- Confirm there is no existing Preview Generator V2 item to mark complete.
+- Confirm unrelated incomplete Level 8 items remain unchanged.