fix(agent): address code review issues

- Add empty goal guard in parser (returns done instead of passthrough)
- Replace `as any` casts in pipeline.ts with proper ActionDecision types
- Add runtime type guards for untrusted LLM output in classifier
- Add intent action to dynamic prompt so UI agent can fire intents

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/agent/classifier.ts

@@ -62,12 +62,16 @@ export async function classifyGoal(
 
   switch (parsed.type) {
     case "intent": {
+      const rawExtras = parsed.extras;
+      const validExtras = (rawExtras && typeof rawExtras === "object" && !Array.isArray(rawExtras))
+        ? rawExtras as Record<string, string>
+        : undefined;
       const intent: IntentCommand = {
-        intentAction: (parsed.intentAction as string) ?? "",
-        uri: parsed.uri as string | undefined,
-        intentType: parsed.intentType as string | undefined,
-        extras: parsed.extras as Record<string, string> | undefined,
-        packageName: parsed.packageName as string | undefined,
+        intentAction: typeof parsed.intentAction === "string" ? parsed.intentAction : "",
+        uri: typeof parsed.uri === "string" ? parsed.uri : undefined,
+        intentType: typeof parsed.intentType === "string" ? parsed.intentType : undefined,
+        extras: validExtras,
+        packageName: typeof parsed.packageName === "string" ? parsed.packageName : undefined,
       };
       if (!intent.intentAction) {
         console.warn("[Classifier] Intent missing intentAction, falling through");

server/src/agent/llm.ts

@@ -293,7 +293,8 @@ Scrolling:
 
 App Control:
   {"action": "launch", "package": "com.app.name", "reason": "Open app"}
-  {"action": "switch_app", "package": "com.app.name", "reason": "Switch app"}`;
+  {"action": "switch_app", "package": "com.app.name", "reason": "Switch app"}
+  {"action": "intent", "intentAction": "android.intent.action.VIEW", "uri": "tel:123", "reason": "Fire Android intent directly"}`;
 
   // Multi-step actions (always useful)
   actions += `

server/src/agent/parser.ts

@@ -339,6 +339,7 @@ export function parseGoal(
   caps: DeviceCapabilities
 ): PipelineResult {
   const trimmed = goal.trim();
+  if (!trimmed) return { stage: "parser", type: "done", reason: "Empty goal" };
   for (const matcher of PATTERNS) {
     const result = matcher(trimmed, caps);
     if (result) return result;

server/src/agent/pipeline.ts

@@ -8,6 +8,7 @@
 import type {
   InstalledApp,
   PipelineResult,
+  ActionDecision,
 } from "@droidclaw/shared";
 import { sessions } from "../ws/sessions.js";
 import { db } from "../db.js";
@@ -185,7 +186,7 @@ export async function runPipeline(
 
       onStep?.({
         stepNumber: 1,
-        action: { action: parseResult.type, reason: `Parser: ${parseResult.type}` } as any,
+        action: { action: parseResult.type, reason: `Parser: ${parseResult.type}` } as unknown as ActionDecision,
         reasoning: `Parser: direct ${parseResult.type} action`,
         screenHash: "",
       });
@@ -228,7 +229,7 @@ export async function runPipeline(
 
       onStep?.({
         stepNumber: 1,
-        action: { action: "intent", reason: "Classifier: intent" } as any,
+        action: { action: "intent", intentAction: classResult.intent.intentAction, uri: classResult.intent.uri, reason: "Classifier: intent" } as unknown as ActionDecision,
         reasoning: `Classifier: ${classResult.intent.intentAction}`,
         screenHash: "",
       });