Expand Palette Manager V2 layout when header details are hidden - PR_26124_045-palette-manager-hidden-header-wide-layout

Author: DavidQ

docs/dev/codex_commands.md

@@ -1,7 +1,7 @@
-# PR_26124_044-accordionv2-theme-extract
+# PR_26124_045-palette-manager-hidden-header-wide-layout
 
 ```bash
-npx @openai/codex run --model gpt-5.5 --reasoning high "Run full workflow for PR_26124_044-accordionv2-theme-extract. Follow PROJECT_INSTRUCTIONS.md exactly. Move the working accordionV2 implementation from palette-manager-v2 into src/engine/theme/accordionV2 and update palette-manager-v2 to use the shared accordionV2 without behavior changes."
+npx @openai/codex run --model gpt-5.5 --reasoning high "Run full workflow for PR_26124_045-palette-manager-hidden-header-wide-layout. Follow PROJECT_INSTRUCTIONS.md exactly. Update only palette-manager-v2 layout behavior when the shared platform header/details area is hidden."
 ```
 
 ## Validation Commands
@@ -15,7 +15,8 @@ npm run test:workspace-v2
 ## Manual Validation
 
 - Open `tools/palette-manager-v2/index.html`.
-- Confirm User Palette and Add User Swatch use shared `.accordion-v2` classes.
-- Confirm both open panels share center height.
-- Collapse either panel and confirm the other fills available center height.
-- Confirm source select, search, sort, size, pin, and unpin still work.
+- Confirm normal layout is unchanged.
+- Click `Hide Header and Details`.
+- Confirm left/right panels anchor to the viewport sides.
+- Confirm center fills the space between them and uses available height.
+- Confirm accordionV2 behavior remains unchanged.

docs/dev/commit_comment.txt

@@ -1 +1 @@
-Extract accordionV2 into shared theme component and reuse it in Palette Manager - PR_26124_044-accordionv2-theme-extract
+Expand Palette Manager layout when platform header is hidden - PR_26124_045-palette-manager-hidden-header-wide-layout

docs/dev/reports/PR_26124_045_report.md

@@ -0,0 +1,49 @@
+# PR_26124_045 Report
+
+## Purpose
+Update Palette Manager V2 layout only when the shared platform header/details area is hidden.
+
+## Changes
+- Added CSS overrides scoped to the existing platform hidden-header/fullscreen state.
+- Expanded Palette Manager to full available width only when hidden-header state is active.
+- Anchored left and right panels to their grid edges in hidden-header state.
+- Let the center panel fill the horizontal space and available viewport height in hidden-header state.
+- Preserved normal non-hidden-header layout.
+
+## Boundaries Confirmed
+- No workspace/toolState/session changes.
+- No sample JSON changes.
+- No `tools/shared` changes.
+- No shared accordionV2 changes.
+- No dependencies added.
+
+## Validation
+- No PR045 JS files changed.
+- `node --check src/engine/theme/accordionV2/accordionV2.js` -> PASS
+- `node --check tools/palette-manager-v2/modules/PaletteManagerApp.js` -> PASS
+- `git diff --check` -> PASS with existing Git LF/CRLF warning
+- Browser/manual layout validation at 1920x1000 -> PASS
+- `npm run test:workspace-v2` -> FAIL: missing npm script
+
+## Playwright
+- Required command was executed but failed before tests ran because `test:workspace-v2` is not defined in `package.json`.
+- Expected pass behavior after script restoration: Workspace V2 validation should pass with Palette Manager hidden-header layout overrides.
+- Expected fail behavior: Workspace V2 failures should identify a lifecycle or tool validation regression.
+
+## Manual Validation Details
+- Normal layout remained capped at `1600px`.
+- Clicking `Hide Header and Details` entered existing platform fullscreen state.
+- Hidden-header layout expanded to full viewport width.
+- Left panel anchored near the left edge.
+- Right panel anchored near the right edge.
+- Center panel filled the space between left and right panels.
+- Center panel used available viewport height.
+- accordionV2 panel count and open state remained unchanged.
+- No horizontal page overflow was detected.
+
+## Full Samples Smoke
+- Skipped by explicit instruction.
+- Sample JSON remains out of scope until the sample alignment phase.
+
+## Roadmap
+- No roadmap status change was made because this PR is a focused Palette Manager layout correction without a matching pending roadmap status item.

docs/dev/reports/codex_changed_files.txt

@@ -1,17 +1,12 @@
  M docs/dev/codex_commands.md
  M docs/dev/commit_comment.txt
  M docs/dev/reports/codex_review.diff
- M tools/palette-manager-v2/index.html
- M tools/palette-manager-v2/modules/PaletteManagerApp.js
  M tools/palette-manager-v2/paletteManagerV2.css
-?? docs/dev/reports/PR_26124_044_report.md
-?? docs/pr/PR_26124_044-accordionv2-theme-extract/
-?? src/engine/theme/accordionV2/
+?? docs/dev/reports/PR_26124_045_report.md
+?? docs/pr/PR_26124_045-palette-manager-hidden-header-wide-layout/
 
- docs/dev/codex_commands.md                         |    7 +-
- docs/dev/commit_comment.txt                        |    2 +-
- docs/dev/reports/codex_review.diff                 | 1027 +++++++-------------
- tools/palette-manager-v2/index.html                |   20 +-
- .../modules/PaletteManagerApp.js                   |   28 -
- tools/palette-manager-v2/paletteManagerV2.css      |   78 +-
- 6 files changed, 391 insertions(+), 771 deletions(-)
+ docs/dev/codex_commands.md                    |  13 +-
+ docs/dev/commit_comment.txt                   |   2 +-
+ docs/dev/reports/codex_review.diff            | 625 ++++++++------------------
+ tools/palette-manager-v2/paletteManagerV2.css |  57 +++
+ 4 files changed, 255 insertions(+), 442 deletions(-)