homelab: v0.6.0 — usage telemetry (usage top), evidence-driven verb prioritization

Answers the question that drove the whole CLI — which verbs to add next — with
data instead of one maintainer's habits, and resolves the cross-user-usage ask
in-bounds (no reading anyone's home).

- emit on dispatch: every verb fire-and-forgets one Loki line {job,user,verb} +
  "exit=N ver=X". ONLY the verb path + exit code — never args, paths, flags, or
  secrets (the emit never sees arguments). Best-effort: 800ms timeout, errors
  swallowed, never affects the command; opt-out HOMELAB_TELEMETRY=0. Discovery
  verbs (manifest/version/help) and usage itself don't self-record.
- usage top [--since 30d] [--user U] [--json]: ranks verbs via
  sum by (verb)(count_over_time({job="homelab-usage"}[…])) against the shared
  Loki. Cross-user analytics WITHOUT touching ~/.claude — the privacy-preserving
  answer to "what does the team use".
- Loki sink (zero new infra, dogfoods v0.5 logs path); push verified HTTP 204 no
  auth. ADR docs/adr/0011.

Live-verified: ran 4 verbs, usage top ranked them correctly (metrics query=2).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

AGENTS.md

@@ -289,7 +289,7 @@ curl -X POST -H "Authorization: token $TOK" -H 'Content-Type: application/json'
 ```
 
 ## Common Operations
-- **`homelab` CLI** (`/usr/local/bin/homelab`, source `cli/`): unified infra-ops verbs — run `homelab manifest` to discover the surface (each verb tagged read/write). Infra loop: `homelab tf plan|fmt|apply <stack>` (wraps `scripts/tg`; `apply` auto-claims presence + releases on exit, warns out-of-band), `homelab claim|release <kind>:<name>`, `homelab work start|land|clean <topic>` (worktree lifecycle; `land` gates on verification, `--verify-cmd`/`--no-verify`). Kubernetes (v0.2): `homelab k8s status|get|logs|describe|debug|pf|rollout-status <app>` (read; `<app>` defaults to the namespace, target to `deploy/<app>`), `homelab k8s db <app> [--mysql] -- "<SQL>"`, `k8s exec`, `k8s restart`, `k8s rm-pod` (pods/jobs only) — config-mutation kubectl verbs are intentionally absent (Terraform-only). Memory (v0.3): `homelab memory recall "<context>"` (semantic search), `memory list|categories|tags|stats|secret`, `memory store|update|delete` — a direct HTTP client to claude-memory that works even when the memory MCP is down. CI/deploy (v0.4): `homelab ci status|watch [commit]` (Woodpecker, repo resolved from cwd), `homelab deploy wait <ns>/<deploy> [--sha]` (image-sha + rollout) — `work land` now auto-watches CI to green. Net/obs (v0.5): `homelab net check <host> [path]` (external-CF vs internal-LB reachability), `dns lookup <name>` (Technitium vs public diff), `metrics query "<promql>"` / `metrics alerts` (Prometheus via LB), `logs query "<logql>" [--since]` (Loki via LB) — endpoint resolution baked in, no port-forward. Full docs: `cli/README.md`.
+- **`homelab` CLI** (`/usr/local/bin/homelab`, source `cli/`): unified infra-ops verbs — run `homelab manifest` to discover the surface (each verb tagged read/write). Infra loop: `homelab tf plan|fmt|apply <stack>` (wraps `scripts/tg`; `apply` auto-claims presence + releases on exit, warns out-of-band), `homelab claim|release <kind>:<name>`, `homelab work start|land|clean <topic>` (worktree lifecycle; `land` gates on verification, `--verify-cmd`/`--no-verify`). Kubernetes (v0.2): `homelab k8s status|get|logs|describe|debug|pf|rollout-status <app>` (read; `<app>` defaults to the namespace, target to `deploy/<app>`), `homelab k8s db <app> [--mysql] -- "<SQL>"`, `k8s exec`, `k8s restart`, `k8s rm-pod` (pods/jobs only) — config-mutation kubectl verbs are intentionally absent (Terraform-only). Memory (v0.3): `homelab memory recall "<context>"` (semantic search), `memory list|categories|tags|stats|secret`, `memory store|update|delete` — a direct HTTP client to claude-memory that works even when the memory MCP is down. CI/deploy (v0.4): `homelab ci status|watch [commit]` (Woodpecker, repo resolved from cwd), `homelab deploy wait <ns>/<deploy> [--sha]` (image-sha + rollout) — `work land` now auto-watches CI to green. Net/obs (v0.5): `homelab net check <host> [path]` (external-CF vs internal-LB reachability), `dns lookup <name>` (Technitium vs public diff), `metrics query "<promql>"` / `metrics alerts` (Prometheus via LB), `logs query "<logql>" [--since]` (Loki via LB) — endpoint resolution baked in, no port-forward. Usage telemetry (v0.6): every dispatched verb fire-and-forgets a Loki line (`{user,verb}` + exit only, NO args/secrets; opt-out `HOMELAB_TELEMETRY=0`); `homelab usage top [--since][--user]` ranks verb usage across all users — evidence for what to build next, queryable without reading anyone's home. Full docs: `cli/README.md`.
 - **Deploy new service**: Use `stacks/<existing-service>/` as template. Create stack, add DNS in tfvars, apply platform then service.
 - **Fix crashed pods**: Run healthcheck first. Safe to delete evicted/failed pods and CrashLoopBackOff pods with >10 restarts.
 - **OOMKilled**: Check `kubectl describe limitrange tier-defaults -n <ns>`. Increase `resources.limits.memory` in the stack's main.tf.