fix: skill discovery path doubling and pattern/name matching

Three related bugs that prevent agent skills from loading:

1. **Doubled "skills/" prefix in discovery** (skills-adapter.ts)
   `discoverSkills()` unconditionally prepends "skills/" to the relative
   path, but `baseDir` points to the parent of the skills directory
   (e.g. `~/.fusion/agent`), so `relative()` already returns a path
   starting with "skills/". Result: IDs like
   `auto::skills/skills/web-research/SKILL.md` instead of
   `auto::skills/web-research/SKILL.md`.

   Fix: only prepend "skills/" when the relative path does not already
   start with it.

2. **normalizeAgentSkills does not extract name from full ID**
   (session-skill-context.ts)
   The dashboard saves full skill IDs (e.g.
   `"auto::skills/web-research/SKILL.md"`) into agent
   `metadata.skills`. The runtime matches these against
   `skill.name` (e.g. `"web-research/SKILL.md"`) — they never match,
   so agent skills silently fail to load.

   Fix: when an entry contains "::", parse out the skill name (last
   two path segments) before matching.

3. **Pattern matching uses absolute filePath instead of skill name**
   (skill-resolver.ts)
   Settings patterns written by `toggleExecutionSkill()` are relative
   (e.g. `"web-research/SKILL.md"`), but the resolver compares them
   against `skill.filePath` which is absolute. Patterns can never
   match, producing spurious "not found in discovered skills" warnings.

   Fix: match patterns against `skill.name` (case-insensitive) with
   fallback to exact `skill.filePath` match for backward compatibility.

packages/dashboard/src/skills-adapter.ts

@@ -261,8 +261,11 @@ export function createSkillsAdapter(options: {
       const discoveredSkills: DiscoveredSkill[] = [];
 
       for (const resource of skillResources) {
-        // Compute relative path for the skill
+        // Compute relative path for the skill.
-        const skillRelativePath = "skills/" + relative(resource.metadata.baseDir ?? "", resource.path);
+        // Guard against baseDir being the parent of the skills directory,
+        // which causes relative() to already include "skills/" in the result.
+        const _rel = relative(resource.metadata.baseDir ?? "", resource.path);
+        const skillRelativePath = _rel.startsWith("skills/") ? _rel : "skills/" + _rel;
 
         const skillId = computeSkillId(resource.metadata.source, skillRelativePath);
         const skillName = extractSkillName(skillRelativePath, resource.metadata.source);

packages/engine/src/session-skill-context.ts

@@ -101,12 +101,24 @@ export function normalizeAgentSkills(
       }
     }
 
-    // Skip invalid/empty entries and deduplicate
+    // Skip invalid/empty entries and deduplicate.
-    if (name && name.length > 0 && !seen.has(name)) {
+    // If the entry is a full skill ID ("source::path"), extract just the
+    // skill name (last two path segments) so it matches the discovered
+    // skill.name produced by extractSkillName().
+    if (name && name.length > 0) {
+      if (name.includes("::")) {
+        const idPath = name.split("::").pop()!;
+        const parts = idPath.replace(/\\/g, "/").split("/").filter(Boolean);
+        if (parts.length >= 2) {
+          name = parts.slice(-2).join("/");
+        }
+      }
+      if (!seen.has(name)) {
         seen.add(name);
         result.push(name);
       }
     }
+  }
 
   return result;
 }

packages/engine/src/skill-resolver.ts

@@ -327,20 +327,40 @@ export function createSkillsOverrideFromSelection(
     // Skills must match the inclusion criteria AND not be in the exclusion list
     const hasExcluded = excludedSkillPaths.size > 0;
     let filteredSkills: Skill[];
+    // Build a name-based lookup for pattern/exclusion matching.
+    // Settings patterns are relative (e.g. "web-research/SKILL.md") but
+    // skill.filePath is absolute. Match against skill.name instead so
+    // that patterns written by toggleExecutionSkill() actually resolve.
+    const skillNameMatches = (skill: Skill, pattern: string): boolean =>
+      skill.name.toLowerCase() === pattern.toLowerCase()
+      || skill.filePath === pattern;
+    const isExcluded = (skill: Skill): boolean => {
+      for (const ep of excludedSkillPaths) {
+        if (skillNameMatches(skill, ep)) return true;
+      }
+      return false;
+    };
+    const isAllowed = (skill: Skill): boolean => {
+      for (const ap of allowedSkillPaths) {
+        if (skillNameMatches(skill, ap)) return true;
+      }
+      return false;
+    };
+
     if (hasRequestedNames) {
       // Filter by requested names (case-insensitive match)
       const requestedNamesLower = new Set(requestedSkillNames!.map((n) => n.toLowerCase()));
       filteredSkills = base.skills.filter(
-        (skill) => requestedNamesLower.has(skill.name.toLowerCase()) && !excludedSkillPaths.has(skill.filePath)
+        (skill) => requestedNamesLower.has(skill.name.toLowerCase()) && !isExcluded(skill)
       );
     } else if (hasPatterns) {
-      // Filter by file path (in allowed set AND not in excluded set)
+      // Filter by pattern (allowed AND not excluded)
       filteredSkills = base.skills.filter(
-        (skill) => allowedSkillPaths.has(skill.filePath) && !excludedSkillPaths.has(skill.filePath)
+        (skill) => isAllowed(skill) && !isExcluded(skill)
       );
     } else if (hasExcluded) {
       // Only exclusions set - filter out excluded skills
-      filteredSkills = base.skills.filter((skill) => !excludedSkillPaths.has(skill.filePath));
+      filteredSkills = base.skills.filter((skill) => !isExcluded(skill));
     } else {
       // No filter criteria - this shouldn't happen if filterActive is true
       filteredSkills = base.skills;
@@ -350,28 +370,22 @@ export function createSkillsOverrideFromSelection(
     const newDiagnostics: ResourceDiagnostic[] = [];
 
     // Check for excluded paths that DO match a discovered skill (disabled)
-    // These are skills that exist but were explicitly excluded by project patterns
     const purpose = sessionPurpose ? ` [${sessionPurpose}]` : "";
-    const discoveredPaths = new Set(base.skills.map((s) => s.filePath));
+    const discoveredNames = new Set(base.skills.map((s) => s.name.toLowerCase()));
 
     for (const excludedPath of excludedSkillPaths) {
-      if (discoveredPaths.has(excludedPath)) {
+      if (discoveredNames.has(excludedPath.toLowerCase())) {
-        // Skill exists but was disabled by project patterns
-        // Use "warning" type since ResourceDiagnostic only supports warning|error|collision
         newDiagnostics.push({
           type: "warning",
           message: `Skill at '${excludedPath}' exists but is disabled by project execution settings${purpose}`,
           path: excludedPath,
         });
       }
-      // If the path doesn't match any discovered skill, it's not a disabled skill - it's just not relevant
     }
 
     // Check for configured patterns (allowed paths) that don't match any discovered skill
-    // Note: At this point, we have access to base.skills for validation
     for (const allowedPath of allowedSkillPaths) {
-      if (!discoveredPaths.has(allowedPath)) {
+      if (!discoveredNames.has(allowedPath.toLowerCase())) {
-        // Allowed path doesn't match any discovered skill - this is a missing/invalid pattern
         newDiagnostics.push({
           type: "warning",
           message: `Configured skill pattern '${allowedPath}' not found in discovered skills${purpose}`,