feat(ci): v0.9.0 — Distribution & Expansion milestone complete

---ci---
project: ci
phase: 6
milestone: v0.9
status: complete
artifacts:
  tags: [v0.9.0]
decisions:
  - id: D-047
    decision: v0.9 theme = Distribution & Expansion
    rationale: npm publish + OpenAI/Anthropic backends + agent flesh + parallel execution
    confidence: 0.92
  - id: D-049
    decision: Feature milestone — patch tags v0.8.1-v0.8.6 then v0.9.0
    rationale: OpenAI backend, agent flesh, npm publish all feat
    confidence: 0.95
  - id: D-059
    decision: Rename OllamaBaseBackend to LLMBaseBackend + thin OllamaBaseBackend subclass
    rationale: 15 of 17 methods backend-agnostic
    confidence: 0.92
  - id: D-060
    decision: OpenAI/Anthropic backends use native fetch() not SDK packages
    rationale: No dependency bloat; fetch native in Node 18+
    confidence: 0.85
  - id: D-066
    decision: Concurrency limiter internal (no p-limit dependency)
    rationale: 15 lines; avoids dependency for trivial feature
    confidence: 0.90
  - id: D-067
    decision: Promise.allSettled for review agents at orchestrator lines 373-400
    rationale: Current sequential loop replaced with parallel execution
    confidence: 0.88
requirements:
  covered: [PUBLISH-01, PUBLISH-02, PUBLISH-03, PUBLISH-04, OPENAI-01, OPENAI-02, OPENAI-03, OPENAI-04, OPENAI-05, FLESH-01, FLESH-02, FLESH-03, FLESH-04, FLESH-05, ANTHROPIC-01, ANTHROPIC-02, FLESH-06, FLESH-07, NPM-01, NPM-02, PARALLEL-01, PARALLEL-02, PARALLEL-03, INTEG-01, INTEG-02, INTEG-03, INTEG-04, INTEG-05]
---/ci---

6 phases, 28 tasks, 4077 net lines added, 57 test suites, 527 tests, zero stub agents

scripts/ensure-shebang.js

@@ -0,0 +1,23 @@
+const fs = require("node:fs");
+const path = require("node:path");
+
+const projectRoot = path.resolve(__dirname, "..");
+const cliEntry = path.join(projectRoot, "dist", "cli", "index.js");
+const shebang = "#!/usr/bin/env node\n";
+
+if (!fs.existsSync(cliEntry)) {
+  console.log(`dist/cli/index.js not found — skipping shebang check (build may not have run yet)`);
+  process.exit(0);
+}
+
+const content = fs.readFileSync(cliEntry, "utf-8");
+
+if (content.startsWith(shebang.trim())) {
+  console.log("Shebang already present in dist/cli/index.js");
+  process.exit(0);
+}
+
+const updated = shebang + content;
+fs.writeFileSync(cliEntry, updated, "utf-8");
+console.log("Prepended shebang to dist/cli/index.js");
+process.exit(0);