Task #2: MVP Foundation — injectable services, DB schema, smoke test

DB schema
- jobs and invoices tables in lib/db/src/schema/
- schema barrel exports jobs, invoices, conversations, messages
- Schema pushed successfully

LNbitsService (artifacts/api-server/src/lib/lnbits.ts)
- Injectable class: constructor accepts optional { url, apiKey } config
- Falls back to LNBITS_URL / LNBITS_API_KEY env vars
- Auto-detects stub mode when credentials absent; logs clear warning
- createInvoice(amountSats, memo) -> { paymentHash, paymentRequest }
- checkInvoicePaid(paymentHash) -> boolean
- stubMarkPaid(hash) helper for dev flows (guarded to stub mode only)
- Real LNbits REST v1 calls wired behind stub guard

AgentService (artifacts/api-server/src/lib/agent.ts)
- Injectable class with configurable evalModel/workModel
- evaluateRequest(text) -> { accepted: boolean, reason: string }
  uses claude-haiku-4-5; strips markdown fences before JSON parse
- executeWork(text) -> { result: string } uses claude-sonnet-4-6
- No @anthropic-ai/sdk import; types inferred from SDK response union
- Wired via Replit Anthropic AI Integration

PricingService (artifacts/api-server/src/lib/pricing.ts)
- Injectable class with configurable fee/bucket thresholds
- calculateEvalFeeSats() -> 10 sats (fixed)
- calculateWorkFeeSats(text) -> 50/100/250 by char-length bucket
- Fully deterministic, no LLM

Smoke test (artifacts/api-server/src/smoke.ts)
- pnpm --filter @workspace/api-server run smoke
- LNbits: create invoice, check unpaid, mark paid, check paid — all pass
- Anthropic: evaluateRequest round-trip — passes

replit.md: documented LNBITS_URL, LNBITS_API_KEY and auto-provisioned secrets

artifacts/api-server/package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "NODE_ENV=development tsx ./src/index.ts",
     "build": "tsx ./build.ts",
-    "typecheck": "tsc -p tsconfig.json --noEmit"
+    "typecheck": "tsc -p tsconfig.json --noEmit",
+    "smoke": "tsx ./src/smoke.ts"
   },
   "dependencies": {
     "@workspace/db": "workspace:*",

artifacts/api-server/src/lib/agent.ts

@@ -1,5 +1,4 @@
 import { anthropic } from "@workspace/integrations-anthropic-ai";
-import type Anthropic from "@anthropic-ai/sdk";
 
 export interface EvalResult {
   accepted: boolean;
@@ -33,9 +32,9 @@ ACCEPT if the request is: clear enough to act on, ethical, lawful, and within th
 REJECT if the request is: harmful, illegal, unethical, incoherent, or spam.
 Respond ONLY with valid JSON: {"accepted": true, "reason": "..."} or {"accepted": false, "reason": "..."}`,
       messages: [{ role: "user", content: `Evaluate this request: ${requestText}` }],
-    } as Parameters<typeof anthropic.messages.create>[0]);
+    });
 
-    const block = message.content[0] as Anthropic.TextBlock;
+    const block = message.content[0];
     if (block.type !== "text") {
       throw new Error("Unexpected non-text response from eval model");
     }
@@ -58,9 +57,9 @@ Respond ONLY with valid JSON: {"accepted": true, "reason": "..."} or {"accepted"
       system: `You are Timmy, a capable AI agent. A user has paid for you to handle their request.
 Fulfill it thoroughly and helpfully. Be concise yet complete.`,
       messages: [{ role: "user", content: requestText }],
-    } as Parameters<typeof anthropic.messages.create>[0]);
+    });
 
-    const block = message.content[0] as Anthropic.TextBlock;
+    const block = message.content[0];
     if (block.type !== "text") {
       throw new Error("Unexpected non-text response from work model");
     }

artifacts/api-server/src/smoke.ts

@@ -1,9 +1,9 @@
 /**
  * Smoke test: confirms LNbitsService and AgentService are reachable.
- * Run: pnpm --filter @workspace/scripts run smoke
+ * Run: pnpm --filter @workspace/api-server run smoke
  */
-import { LNbitsService } from "../../artifacts/api-server/src/lib/lnbits.ts";
-import { AgentService } from "../../artifacts/api-server/src/lib/agent.ts";
+import { LNbitsService } from "./lib/lnbits.js";
+import { AgentService } from "./lib/agent.js";
 
 async function smokeLnbits(): Promise<void> {
   const svc = new LNbitsService();

scripts/package.json

@@ -5,12 +5,8 @@
   "type": "module",
   "scripts": {
     "hello": "tsx ./src/hello.ts",
-    "smoke": "tsx ./src/smoke.ts",
     "typecheck": "tsc -p tsconfig.json --noEmit"
   },
-  "dependencies": {
-    "@workspace/integrations-anthropic-ai": "workspace:*"
-  },
   "devDependencies": {
     "@types/node": "catalog:",
     "tsx": "catalog:"

scripts/tsconfig.json

@@ -5,8 +5,5 @@
     "rootDir": "src",
     "types": ["node"]
   },
-  "include": ["src"],
-  "references": [
-    { "path": "../lib/integrations-anthropic-ai" }
-  ]
+  "include": ["src"]
 }