diff --git a/src/main/ai/LocalOllamaProvider.ts b/src/main/ai/LocalOllamaProvider.ts
index d326ad8..44ce522 100644
--- a/src/main/ai/LocalOllamaProvider.ts
+++ b/src/main/ai/LocalOllamaProvider.ts
@@ -18,6 +18,7 @@ export class LocalOllamaProvider implements InferenceProvider {
   private timeoutMs: number;
   private temperature: number;
   private numPredict: number;
+  private abortController: AbortController | null = null;
 
   constructor(opts: LocalOllamaOptions = {}) {
     this.endpoint = opts.endpoint ?? 'http://localhost:11434';
@@ -29,8 +30,8 @@ export class LocalOllamaProvider implements InferenceProvider {
   }
 
   async generate(input: GenerateInput): Promise<AiResponse> {
-    const controller = new AbortController();
-    const timer = setTimeout(() => controller.abort(), this.timeoutMs);
+    this.abortController = new AbortController();
+    const timer = setTimeout(() => this.abortController?.abort(), this.timeoutMs);
     try {
       const res = await request(`${this.endpoint}/api/generate`, {
         method: 'POST',
@@ -42,7 +43,7 @@ export class LocalOllamaProvider implements InferenceProvider {
           stream: false,
           options: { temperature: this.temperature, num_predict: this.numPredict }
         }),
-        signal: controller.signal
+        signal: this.abortController.signal
       });
       if (res.statusCode < 200 || res.statusCode >= 300) {
         throw new Error(`ollama http ${res.statusCode}`);
@@ -55,9 +56,15 @@ export class LocalOllamaProvider implements InferenceProvider {
       return parseAiResponse(parsed);
     } finally {
       clearTimeout(timer);
+      this.abortController = null;
     }
   }
 
+  /** v0.2.3.1 — 외부에서 in-flight generate 강제 중단. ProviderHolder.replace 시 사용. */
+  abort(): void {
+    this.abortController?.abort();
+  }
+
   async healthCheck(): Promise<HealthResult> {
     try {
       const res = await request(`${this.endpoint}/api/tags`, { method: 'GET' });
diff --git a/tests/unit/LocalOllamaProvider.test.ts b/tests/unit/LocalOllamaProvider.test.ts
index a9d60fb..eea7c5c 100644
--- a/tests/unit/LocalOllamaProvider.test.ts
+++ b/tests/unit/LocalOllamaProvider.test.ts
@@ -89,4 +89,24 @@ describe('LocalOllamaProvider', () => {
     expect(h.ok).toBe(false);
     expect(h.reason).toMatch(/connect|refused|unreachable/i);
   });
+
+  it('abort() cancels in-flight generate (rejects with AbortError)', async () => {
+    mock.get('http://localhost:11434').intercept({
+      path: '/api/generate', method: 'POST'
+    }).reply((async () => {
+      await new Promise<void>((r) => setTimeout(r, 5000)); // long-running
+      return { statusCode: 200, data: '{}' };
+    }) as never);
+    const provider = new LocalOllamaProvider({ timeoutMs: 30_000 });
+    const generatePromise = provider.generate({
+      text: 'x', todayKst: '2026-05-04', dueDateCandidates: []
+    });
+    setTimeout(() => provider.abort(), 50);
+    await expect(generatePromise).rejects.toThrow();
+  });
+
+  it('constructor uses provided model param (not just default)', () => {
+    const provider = new LocalOllamaProvider({ model: 'gemma4:26b' });
+    expect(provider.name).toBe('local-ollama/gemma4:26b');
+  });
 });