feat: expose skills and $ autocomplete (#92)

server/src/sync/rpcGateway.ts

@@ -177,6 +177,18 @@ export class RpcGateway {
         }
     }
 
+    async listSkills(sessionId: string): Promise<{
+        success: boolean
+        skills?: Array<{ name: string; description?: string }>
+        error?: string
+    }> {
+        return await this.sessionRpc(sessionId, 'listSkills', {}) as {
+            success: boolean
+            skills?: Array<{ name: string; description?: string }>
+            error?: string
+        }
+    }
+
     private async sessionRpc(sessionId: string, method: string, params: unknown): Promise<unknown> {
         return await this.rpcCall(`${sessionId}:${method}`, params)
     }

server/src/sync/syncEngine.ts

@@ -316,4 +316,12 @@ export class SyncEngine {
     }> {
         return await this.rpcGateway.listSlashCommands(sessionId, agent)
     }
+
+    async listSkills(sessionId: string): Promise<{
+        success: boolean
+        skills?: Array<{ name: string; description?: string }>
+        error?: string
+    }> {
+        return await this.rpcGateway.listSkills(sessionId)
+    }
 }

server/src/web/routes/sessions.ts

@@ -347,5 +347,28 @@ export function createSessionsRoutes(getSyncEngine: () => SyncEngine | null): Ho
         }
     })
 
+    app.get('/sessions/:id/skills', async (c) => {
+        const engine = requireSyncEngine(c, getSyncEngine)
+        if (engine instanceof Response) {
+            return engine
+        }
+
+        // Session must exist but doesn't need to be active
+        const sessionResult = requireSessionFromParam(c, engine)
+        if (sessionResult instanceof Response) {
+            return sessionResult
+        }
+
+        try {
+            const result = await engine.listSkills(sessionResult.sessionId)
+            return c.json(result)
+        } catch (error) {
+            return c.json({
+                success: false,
+                error: error instanceof Error ? error.message : 'Failed to list skills'
+            })
+        }
+    })
+
     return app
 }