fix(copilot): generate .prompt.md file for VS Code Copilot slash commands (#328)

* fix(copilot): generate .prompt.md file for VS Code Copilot slash commands

VS Code Copilot requires reusable prompts to be files named
`<name>.prompt.md` directly in `.github/prompts/`. The previous
config generated `.github/prompts/ui-ux-pro-max/PROMPT.md` (a folder
with PROMPT.md inside), which is not recognized as a slash command.

Changes:
- copilot.json: set skillPath to 'prompts', filename to
  'ui-ux-pro-max.prompt.md', add dataPath for data/scripts location
- copilot.json: use 'mode: agent' frontmatter (VS Code format) instead
  of 'name' field
- template.ts: add dataPath support so data/scripts go to a separate
  directory from the prompt file when configured
- template.ts: rewrite hardcoded script paths to platform-specific
  scriptPath for platforms that differ from the default
- uninstall.ts: handle copilot-specific file layout during uninstall

After this fix, `uipro init --ai copilot` produces:
  .github/prompts/ui-ux-pro-max.prompt.md  (slash command file)
  .github/prompts/ui-ux-pro-max/data/      (search database)
  .github/prompts/ui-ux-pro-max/scripts/   (search engine)

* fix(copilot): apply prompt-file layout fix to canonical source template

Address review feedback on PR #328:
- Update src/ui-ux-pro-max/templates/platforms/copilot.json (source of
  truth) with the same .prompt.md layout fix that was previously applied
  only to the packaged CLI asset copy
- Sync cli/assets/templates/platforms/copilot.json byte-for-byte from
  the source template (also fixes stale '15 technology stacks' count;
  there are 16 stack CSVs)

Smoke check (uipro init --ai copilot --offline):
  .github/prompts/ui-ux-pro-max.prompt.md  (slash command, mode: agent)
  .github/prompts/ui-ux-pro-max/data/      (search database)
  .github/prompts/ui-ux-pro-max/scripts/   (search engine)
uninstall --ai copilot removes both the prompt file and data directory.

---------

Co-authored-by: vkayata <volkan.kayatas@mercedes-benz.com>

cli/assets/templates/platforms/copilot.json

@@ -4,13 +4,14 @@
   "installType": "full",
   "folderStructure": {
     "root": ".github",
-    "skillPath": "prompts/ui-ux-pro-max",
-    "filename": "PROMPT.md"
+    "skillPath": "prompts",
+    "filename": "ui-ux-pro-max.prompt.md",
+    "dataPath": "prompts/ui-ux-pro-max"
   },
   "scriptPath": "prompts/ui-ux-pro-max/scripts/search.py",
   "frontmatter": {
-    "name": "ui-ux-pro-max",
-    "description": "Comprehensive design guide for web, mobile, and desktop applications. Contains 67 styles, 161 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 22 technology stacks."
+    "description": "Comprehensive design guide for web, mobile, and desktop applications. Contains 67 styles, 161 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 22 technology stacks.",
+    "mode": "agent"
   },
   "sections": {
     "quickReference": false

cli/src/commands/uninstall.ts

@@ -30,9 +30,18 @@ async function removeSkillDir(baseDir: string, aiType: ConcreteAIType): Promise<
   // `.github/prompts/`, kiro under `.kiro/steering/`. Also clean the legacy
   // `<folder>/skills/` layout (incl. `.shared/`) so older installs are removed.
   const parents = new Set<string>();
+  // Standalone skill files to remove (platforms with a dataPath keep the
+  // rendered skill file apart from the data directory — e.g. copilot's
+  // `.github/prompts/ui-ux-pro-max.prompt.md`).
+  const skillFiles = new Set<string>();
   try {
     const { folderStructure } = await loadPlatformConfig(aiType);
-    parents.add(join(folderStructure.root, dirname(folderStructure.skillPath)));
+    if (folderStructure.dataPath) {
+      skillFiles.add(join(folderStructure.root, folderStructure.skillPath, folderStructure.filename));
+      parents.add(join(folderStructure.root, dirname(folderStructure.dataPath)));
+    } else {
+      parents.add(join(folderStructure.root, dirname(folderStructure.skillPath)));
+    }
   } catch {
     // No platform config — fall back to the legacy folders below.
   }
@@ -40,6 +49,18 @@ async function removeSkillDir(baseDir: string, aiType: ConcreteAIType): Promise<
     parents.add(join(folder, 'skills'));
   }
 
+  for (const skillFile of skillFiles) {
+    const filePath = join(baseDir, skillFile);
+    try {
+      await stat(filePath);
+      await rm(filePath, { force: true });
+      removed.push(skillFile.replaceAll('\\', '/'));
+    } catch (err: unknown) {
+      // Skip non-existent files; re-throw permission or other errors
+      if ((err as NodeJS.ErrnoException).code !== 'ENOENT') throw err;
+    }
+  }
+
   for (const parent of parents) {
     for (const name of skillNames) {
       const skillDir = join(baseDir, parent, name);

cli/src/types/index.ts

@@ -31,6 +31,7 @@ export interface PlatformConfig {
     root: string;
     skillPath: string;
     filename: string;
+    dataPath?: string;
   };
   scriptPath: string;
   frontmatter: Record<string, string> | null;

cli/src/utils/template.ts

@@ -21,6 +21,7 @@ export interface PlatformConfig {
     root: string;
     skillPath: string;
     filename: string;
+    dataPath?: string;
   };
   scriptPath: string;
   frontmatter: Record<string, string> | null;
@@ -151,12 +152,22 @@ export async function renderSkillFile(config: PlatformConfig, isGlobal = false):
     .replace(/\{\{SKILL_OR_WORKFLOW\}\}/g, config.skillOrWorkflow)
     .replace(/\{\{QUICK_REFERENCE\}\}/g, quickRefWithNewline);
 
+  // Rewrite the hardcoded default script path to the platform-specific path
+  const defaultScriptPath = 'skills/ui-ux-pro-max/scripts/search.py';
+  if (config.scriptPath !== defaultScriptPath) {
+    content = content.replace(
+      new RegExp(defaultScriptPath.replace(/\//g, '\\/'), 'g'),
+      config.scriptPath
+    );
+  }
+
   // For global install, rewrite relative script paths to absolute ~/root/ paths
   if (isGlobal) {
     const globalPrefix = `~/${config.folderStructure.root}/`;
+    // Match any platform's script path pattern (skills/, prompts/, steering/, etc.)
     content = content.replace(
-      /python3 skills\//g,
-      `python3 ${globalPrefix}skills/`
+      new RegExp(`python3 ${config.scriptPath.replace(/\//g, '\\/')}`, 'g'),
+      `python3 ${globalPrefix}${config.scriptPath}`
     );
   }
 
@@ -272,17 +283,24 @@ export async function generatePlatformFiles(
   await writeFile(skillFilePath, skillContent, 'utf-8');
   createdFolders.push(config.folderStructure.root);
 
-  // Copy data and scripts into the skill directory (self-contained)
-  await copyDataAndScripts(skillDir);
+  // Copy data and scripts into the data directory (may differ from skill file location)
+  const dataDir = config.folderStructure.dataPath
+    ? join(effectiveDir, config.folderStructure.root, config.folderStructure.dataPath)
+    : skillDir;
+  await mkdir(dataDir, { recursive: true });
+  await copyDataAndScripts(dataDir);
 
   // Install the sibling sub-skills (banner-design, brand, design, ...) next to
   // the orchestrator so all 7 skills are delivered. The skills parent is the
   // orchestrator's parent dir (skills/ for most platforms, prompts/ for
-  // copilot, steering/ for kiro) — derived, not hardcoded.
+  // copilot, steering/ for kiro) — derived, not hardcoded. For platforms with
+  // a separate dataPath (copilot), the orchestrator's data dir is the anchor.
   const skillsParentDir = join(
     effectiveDir,
     config.folderStructure.root,
-    dirname(config.folderStructure.skillPath)
+    config.folderStructure.dataPath
+      ? dirname(config.folderStructure.dataPath)
+      : dirname(config.folderStructure.skillPath)
   );
   await copySubSkills(skillsParentDir, force);
 

src/ui-ux-pro-max/templates/platforms/copilot.json

@@ -4,13 +4,14 @@
   "installType": "full",
   "folderStructure": {
     "root": ".github",
-    "skillPath": "prompts/ui-ux-pro-max",
-    "filename": "PROMPT.md"
+    "skillPath": "prompts",
+    "filename": "ui-ux-pro-max.prompt.md",
+    "dataPath": "prompts/ui-ux-pro-max"
   },
   "scriptPath": "prompts/ui-ux-pro-max/scripts/search.py",
   "frontmatter": {
-    "name": "ui-ux-pro-max",
-    "description": "Comprehensive design guide for web, mobile, and desktop applications. Contains 67 styles, 161 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 22 technology stacks."
+    "description": "Comprehensive design guide for web, mobile, and desktop applications. Contains 67 styles, 161 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 22 technology stacks.",
+    "mode": "agent"
   },
   "sections": {
     "quickReference": false