type: user

role: user

content:
Combined spec + code-quality review of Task 6 in worktree `/Users/steve.briggs/projects/operations/.claude/worktrees/birdseye`. Do spec first, then quality.

Diff: `git diff 03e7d39..51ae45c -- apps/birdseye/internal/registry/`

## Spec — What Was Requested

Create two files in `apps/birdseye/internal/registry/`:

`cache.go`:
- Package doc comment about registry talking to crow + caching
- `Cache` interface with exactly two methods: `Get(api.Module) ([]byte, bool, error)` and `Put(api.Module, []byte) error`
- `MemCache` struct: `mu sync.RWMutex`, `items map[string][]byte`
- `NewMemCache() *MemCache`
- `memKey(m api.Module) string` returns `m.Namespace + "/" + m.Name + "/" + m.Provider + "/" + m.Version`
- `MemCache.Get` uses RLock; returns `(nil, false, nil)` on miss; `(body, true, nil)` on hit
- `MemCache.Put` uses Lock; always returns nil

`cache_test.go`:
- Package `registry`
- Helper `mod(version)` returning `api.Module{...iac/comply/aws...}`
- `TestMemCacheRoundTrip` — miss → put → hit, with body comparison

Commit message exact: `feat(birdseye): registry cache interface and in-memory impl`.

## Quality Focus

- Style: package doc accurate?
- Concurrency: `RWMutex` properly used (RLock on Get, Lock on Put)?
- Anti-patterns: nil map check needed in Get? (No — `NewMemCache` always preallocates.)
- Test sanity: actually exercises hit-and-miss?

## Report Format

**Spec:** ✅ compliant OR ❌ issues with file:line
**Quality:**
- Strengths: 1-2 bullets
- Issues: Critical / Important / Minor
- Assessment: APPROVED | NEEDS_CHANGES

Be terse.

userType: external

entrypoint: cli

gitBranch: worktree-birdseye


content:
- migrate-flux-app: Use when migrating a Flux CD application from the infrastructure/kubernetes/application-deployments repo to the application-deployment repo. Covers copying app folders, updating kustomizations, committing, pushing, and creating merge requests.
- app-infra-generate: Generate an application-infrastructure Terraform module from a YAML spec produced by app-infra-spec. Reads pattern files and a versions manifest to produce main.tf, variables.tf, outputs.tf, overlay guidance, and a triage list.
- app-infra-spec: Structured questionnaire to gather requirements for an application-infrastructure Terraform module. Produces a YAML spec for the app-infra-generate skill.
- obsidian-load: Load context from Obsidian notes in the `Claude/` directory into the current conversation.
- obsidian-save: Save current conversation context to an Obsidian note under the `Claude/` directory.
- mind:search: Search memories for specific content or patterns
- mind:stats: Show memory statistics and storage information
- mind:recent: Show recent memories and activity timeline
- mind:ask: Ask questions about memories and get context-aware answers
- superpowers:using-git-worktrees: Use when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated workspace exists via native tools or git worktree fallback
- superpowers:receiving-code-review: Use when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementation
- superpowers:finishing-a-development-branch: Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup
- superpowers:dispatching-parallel-agents: Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
- superpowers:writing-plans: Use when you have a spec or requirements for a multi-step task, before touching code
- superpowers:using-superpowers: Use when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
- superpowers:writing-skills: Use when creating new skills, editing existing skills, or verifying skills work before deployment
- superpowers:requesting-code-review: Use when completing tasks, implementing major features, or before merging to verify work meets requirements
- superpowers:executing-plans: Use when you have a written implementation plan to execute in a separate session with review checkpoints
- superpowers:verification-before-completion: Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidence before assertions always
- superpowers:brainstorming: You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.
- superpowers:systematic-debugging: Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
- superpowers:test-driven-development: Use when implementing any feature or bugfix, before writing implementation code
- superpowers:subagent-driven-development: Use when executing implementation plans with independent tasks in the current session
- mind:memory: Claude Mind - Search and manage Claude's persistent memory stored in a single portable .mv2 file
- mind:mind: Claude Mind - Search and manage Claude's persistent memory stored in a single portable .mv2 file
- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors ("from now on when X", "each time X", "whenever X", "before/after X") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions ("allow X", "add permission", "move permission to"), env vars ("set X=Y"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: "allow npm commands", "add bq permission to global settings", "move permission to user settings", "set DEBUG=true", "when claude stops show X". For simple settings like theme/model, suggest the /config command.
- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: "rebind ctrl+s", "add a chord shortcut", "change the submit key", "customize keybindings".
- simplify: Review changed code for reuse, quality, and efficiency, then fix any issues found.
- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.
- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo). Omit the interval to let the model self-pace. - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. "check the deploy every 5 minutes", "keep running /babysit-prs"). Do NOT invoke for one-off tasks.
- schedule: Create, update, list, or run scheduled remote agents (routines) that execute on a cron schedule. - When the user wants to schedule a recurring remote agent, set up automated tasks, create a cron job for Claude Code, or manage their scheduled agents/routines. Also use when the user wants a one-time scheduled run ("run this once at 3pm", "remind me to check X tomorrow").
- claude-api: Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. Also handles migrating existing Claude API code between Claude model versions (4.5 → 4.6, 4.6 → 4.7, retired-model replacements).
TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`; user asks for the Claude API, Anthropic SDK, or Managed Agents; user adds/modifies/tunes a Claude feature (caching, thinking, compaction, tool use, batch, files, citations, memory) or model (Opus/Sonnet/Haiku) in a file; questions about prompt caching / cache hit rate in an Anthropic SDK project.
SKIP: file imports `openai`/other-provider SDK, filename like `*-openai.py`/`*-generic.py`, provider-neutral code, general programming/ML.
- init: Initialize a new CLAUDE.md file with codebase documentation
- review: Review a pull request
- security-review: Complete a security review of the pending changes on the current branch

type: attachment


type: message

role: assistant

Bash

command: git diff 03e7d39..51ae45c -- apps/birdseye/internal/registry/

description: Get diff for registry package

type: direct

service_tier: standard

speed: standard

attributionAgent: general-purpose

attributionPlugin: superpowers

type: assistant


content:
diff --git a/apps/birdseye/internal/registry/cache.go b/apps/birdseye/internal/registry/cache.go
new file mode 100644
index 0000000..6513186
--- /dev/null
+++ b/apps/birdseye/internal/registry/cache.go
@@ -0,0 +1,49 @@
+// Package registry talks to a Crow server through its typed client and
+// caches module tarballs on disk so repeated diffs against the same
+// versions stay fast.
+package registry
+
+import (
+	"sync"
+
+	"github.com/immuta/operations/services/crow/pkg/api"
+)
+
+// Cache is the storage seam used by Registry. Production uses DiskCache;
+// tests inject MemCache.
+type Cache interface {
+	Get(api.Module) ([]byte, bool, error)
+	Put(api.Module, []byte) error
+}
+
+// MemCache is a thread-safe in-memory Cache implementation.
+type MemCache struct {
+	mu    sync.RWMutex
+	items map[string][]byte
+}
+
+// NewMemCache returns an empty MemCache.
+func NewMemCache() *MemCache {
+	return &MemCache{items: make(map[string][]byte)}
+}
+
+func memKey(m api.Module) string {
+	return m.Namespace + "/" + m.Name + "/" + m.Provider + "/" + m.Version
+}
+
+func (c *MemCache) Get(m api.Module) ([]byte, bool, error) {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	b, ok := c.items[memKey(m)]
+	if !ok {
+		return nil, false, nil
+	}
+	return b, true, nil
+}
+
+func (c *MemCache) Put(m api.Module, body []byte) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.items[memKey(m)] = body
+	return nil
+}
diff --git a/apps/birdseye/internal/registry/cache_test.go b/apps/birdseye/internal/registry/cache_test.go
new file mode 100644
index 0000000..86e2c88
--- /dev/null
+++ b/apps/birdseye/internal/registry/cache_test.go
@@ -0,0 +1,31 @@
+package registry
+
+import (
+	"testing"
+
+	"github.com/immuta/operations/services/crow/pkg/api"
+)
+
+func mod(version string) api.Module {
+	return api.Module{
+		ModuleIdentifier: api.ModuleIdentifier{Namespace: "iac", Name: "comply", Provider: "aws"},
+		Version:          version,
+	}
+}
+
+func TestMemCacheRoundTrip(t *testing.T) {
+	c := NewMemCache()
+	if _, ok, err := c.Get(mod("1.0.0")); err != nil || ok {
+		t.Fatalf("expected miss; got ok=%v err=%v", ok, err)
+	}
+	if err := c.Put(mod("1.0.0"), []byte("payload")); err != nil {
+		t.Fatalf("Put: %v", err)
+	}
+	got, ok, err := c.Get(mod("1.0.0"))
+	if err != nil || !ok {
+		t.Fatalf("expected hit; got ok=%v err=%v", ok, err)
+	}
+	if string(got) != "payload" {
+		t.Errorf("body = %q", got)
+	}
+}


type: text

text:
**Spec:** ✅ compliant — all required elements present and correct.

Checking each item:
- Package doc: present, mentions crow + caching
- `Cache` interface: exactly two methods with correct signatures
- `MemCache` struct: `mu sync.RWMutex`, `items map[string][]byte`
- `NewMemCache()`: preallocates map with `make`
- `memKey`: returns correct `namespace/name/provider/version` format
- `Get`: uses `RLock`, returns `(nil, false, nil)` on miss, `(body, true, nil)` on hit
- `Put`: uses `Lock`, returns nil
- Test package: `registry`
- `mod(version)` helper: correct fields (iac/comply/aws)
- `TestMemCacheRoundTrip`: miss → put → hit with body comparison

One minor observation: the package doc says "caches module tarballs on disk" but `MemCache` is in-memory. This is not a spec violation (the doc is accurate for the production `DiskCache` the package is designed around), but slightly misleading in the context of this file. Not a defect.

---

**Quality:**

- **Strengths:**
  - `RWMutex` usage is correct: `RLock`/`RUnlock` in `Get`, `Lock`/`Unlock` in `Put`, both via `defer` — no footguns.
  - `NewMemCache` preallocates the map, so no nil-map check needed in `Get`; the concern is correctly dismissed.

- **Issues:**
  - **Minor** — Package doc (`cache.go:3`): "caches module tarballs on disk" is inaccurate for this file. `MemCache` is explicitly in-memory; `DiskCache` hasn't been implemented yet. The doc describes the package's future/production intent but could mislead a reader skimming this file. Consider "caches module tarballs (in-memory for tests; on disk in production)" or defer the "on disk" claim to when `DiskCache` exists.
  - **Minor** — `cache_test.go` has no closing `}` shown in the diff (line 31 ends at `}`), but this is a diff rendering artifact — the file is complete.

**Assessment: APPROVED**

The implementation is correct, concurrency-safe, and fully spec-compliant. The only actionable note is the slightly misleading package doc comment.