config(git,claude,ssh): templated gitconfig; claude settings/commands/hooks/skills; ssh config

gitconfig: name/email from chezmoi data, gh credential helper by PATH
lookup (portable to darwin). claude: no credentials, history, projects,
sessions, or plugin caches. ssh config as private_ (0600).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

dot_claude/skills/agents-sdk/references/durable-execution.md

@@ -0,0 +1,51 @@
+# Durable Execution
+
+Fetch https://developers.cloudflare.com/agents/api-reference/durable-execution/ for complete documentation.
+
+Fibers let agent work survive Durable Object eviction. Progress is checkpointed to SQLite; on recovery, you decide what to do.
+
+## `runFiber`
+
+```typescript
+export class MyAgent extends Agent<Env, State> {
+  async onRequest(request: Request) {
+    await this.runFiber("process-data", async (ctx) => {
+      const step1 = await fetchData();
+      ctx.stash({ step: 1, data: step1 });
+
+      const step2 = await transform(step1);
+      ctx.stash({ step: 2, result: step2 });
+
+      this.setState({ result: step2 });
+    });
+    return new Response("Started");
+  }
+
+  async onFiberRecovered(ctx) {
+    const checkpoint = ctx.stash;
+    if (checkpoint.step === 1) {
+      const step2 = await transform(checkpoint.data);
+      this.setState({ result: step2 });
+    }
+  }
+}
+```
+
+## Key APIs
+
+| API | Purpose |
+|-----|---------|
+| `this.runFiber(name, fn)` | Start a named fiber |
+| `ctx.stash` / `this.stash` | Read latest checkpoint |
+| `ctx.stash = data` | Write checkpoint (JSON-serializable) |
+| `onFiberRecovered(ctx)` | Called on DO restart if fiber was in-flight |
+| `keepAlive()` | Prevent hibernation while fiber runs |
+| `keepAliveWhile(fn)` | Keep alive for duration of async function |
+
+## Important
+
+- `stash` replaces the entire checkpoint — not a merge
+- The lambda is NOT restored on recovery — only the stash data is. You must re-derive what to do in `onFiberRecovered`
+- No auto-retry on throw — handle errors yourself
+- For long-running pipelines with automatic retries, use Workflows instead
+- Filter concurrent fibers by `ctx.name` in `onFiberRecovered`