feat(config): add ASK_MODEL env var and update docs assistant endpoint to SRS API

apps/api/wrangler.jsonc

@@ -34,7 +34,10 @@
     "TO_EMAIL": "prnk28@gmail.com",
     "DOCS_URL": "https://lc.prd.lk",
     "DOCS_ORIGIN": "https://lc.prd.lk,https://prdlk.github.io",
-    "PUBLIC_URL": "https://srs-api.prdlk.workers.dev"
+    "PUBLIC_URL": "https://srs-api.prdlk.workers.dev",
+    // The docs assistant's OpenRouter model (POST /ask). `:free` variants share
+    // an upstream pool and answer 429 when it is saturated.
+    "ASK_MODEL": "qwen/qwen3.8-27b:free"
   }
 
   // Secrets (wrangler secret put): GH_PAT, WEBHOOK_SECRET, LINK_KEY.

apps/docs/blume.config.ts

@@ -1,5 +1,4 @@
 import { defineConfig } from "blume";
-import { openrouter } from "blume/ai";
 import type { StandardSchema } from "blume/core/standard-schema.ts";
 import { custom, filesystem } from "blume/sources";
 import { githubReleasesSource } from "blume/sources/github-releases.ts";
@@ -135,16 +134,14 @@ export default defineConfig({
     structuredData: true,
     x: { handle: "@prdlk" },
   },
-  // The assistant's `/api/ask` route runs on demand and reads
-  // OPENROUTER_API_KEY at request time (`getSecret`), so it needs a server
-  // runtime holding that secret — a static host cannot answer it.
+  // Blume's own assistant route is server-rendered (it reads the provider key
+  // per request), which a static Pages build cannot ship. The SRS Worker
+  // answers instead (apps/api/src/ask.ts: OpenRouter, grounded on this site's
+  // llms-full.txt, which `agents.llmsTxt` publishes).
   ai: {
     assistant: {
       enabled: true,
-      provider: openrouter({
-        model: "qwen/qwen3.8-27b:free",
-        reasoning: "none",
-      }),
+      endpoint: "https://srs-api.prdlk.workers.dev/ask",
     },
   },
   agents: {

apps/docs/package.json

@@ -8,7 +8,6 @@
     "doctor": "blume doctor"
   },
   "dependencies": {
-    "@openrouter/ai-sdk-provider": "^3.1.0",
     "blume": "^2.1.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",