type: user

role: user

content:
You are implementing Task 7 of the birdseye CLI implementation plan.

## Working Environment

- **Worktree path:** `/Users/steve.briggs/projects/operations/.claude/worktrees/birdseye`
- **Git branch:** `worktree-birdseye`
- Recent commits include Task 6 (MemCache at `51ae45c`).
- Use absolute paths or `cd` into the worktree.
- **NEVER push.** **NEVER use `git add .` / `git add -A`.**

## Context

Task 6 created `apps/birdseye/internal/registry/cache.go` with the `Cache` interface and `MemCache`. The test file `cache_test.go` has a `mod(version)` helper. Your job is to ADD `DiskCache` to the SAME files (append to `cache.go`, append to `cache_test.go`). `DiskCache` writes tarballs under `<root>/<namespace>/<name>/<provider>/<version>.tar.gz` with an atomic temp-file + rename write.

Strict TDD: write the failing tests first.

## Task Description (Verbatim)

### Task 7: `internal/registry` — on-disk cache

**Files:**
- Modify: `apps/birdseye/internal/registry/cache.go`
- Modify: `apps/birdseye/internal/registry/cache_test.go`

- [ ] **Step 1: Append failing tests** to `apps/birdseye/internal/registry/cache_test.go`:

```go
func TestDiskCacheMissThenHit(t *testing.T) {
	dir := t.TempDir()
	c, err := NewDiskCache(dir)
	if err != nil {
		t.Fatalf("NewDiskCache: %v", err)
	}
	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("disk-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) != "disk-payload" {
		t.Errorf("body = %q", got)
	}
}

func TestDiskCacheSurvivesNewInstance(t *testing.T) {
	dir := t.TempDir()
	c1, _ := NewDiskCache(dir)
	if err := c1.Put(mod("2.0.0"), []byte("persisted")); err != nil {
		t.Fatal(err)
	}
	c2, _ := NewDiskCache(dir)
	got, ok, err := c2.Get(mod("2.0.0"))
	if err != nil || !ok {
		t.Fatalf("expected hit; got ok=%v err=%v", ok, err)
	}
	if string(got) != "persisted" {
		t.Errorf("body = %q", got)
	}
}
```

- [ ] **Step 2: Run, expect FAIL** (`undefined: NewDiskCache`)

Run: `cd /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye && go test ./internal/registry/... -run TestDisk -v`
Expected: compile error.

- [ ] **Step 3: Append to `apps/birdseye/internal/registry/cache.go`**

Add new imports to the existing import block (merge — do not create a second block):

```go
import (
	"errors"
	"fmt"
	"os"
	"path/filepath"
	"sync"

	"github.com/immuta/operations/services/crow/pkg/api"
)
```

Append below `MemCache`:

```go
// DiskCache stores tarballs under
//   <root>/<namespace>/<name>/<provider>/<version>.tar.gz
// Writes are atomic via a temp file + rename.
type DiskCache struct {
	root string
}

// NewDiskCache creates the root directory if it does not exist.
func NewDiskCache(root string) (*DiskCache, error) {
	if err := os.MkdirAll(root, 0o755); err != nil {
		return nil, fmt.Errorf("mkdir cache root: %w", err)
	}
	return &DiskCache{root: root}, nil
}

func (c *DiskCache) path(m api.Module) string {
	return filepath.Join(c.root, m.Namespace, m.Name, m.Provider, m.Version+".tar.gz")
}

func (c *DiskCache) Get(m api.Module) ([]byte, bool, error) {
	b, err := os.ReadFile(c.path(m))
	if errors.Is(err, os.ErrNotExist) {
		return nil, false, nil
	}
	if err != nil {
		return nil, false, fmt.Errorf("read cache: %w", err)
	}
	return b, true, nil
}

func (c *DiskCache) Put(m api.Module, body []byte) error {
	final := c.path(m)
	if err := os.MkdirAll(filepath.Dir(final), 0o755); err != nil {
		return fmt.Errorf("mkdir cache dir: %w", err)
	}
	tmp, err := os.CreateTemp(filepath.Dir(final), ".birdseye-*.tmp")
	if err != nil {
		return fmt.Errorf("create temp: %w", err)
	}
	tmpName := tmp.Name()
	if _, err := tmp.Write(body); err != nil {
		_ = tmp.Close()
		_ = os.Remove(tmpName)
		return fmt.Errorf("write temp: %w", err)
	}
	if err := tmp.Close(); err != nil {
		_ = os.Remove(tmpName)
		return fmt.Errorf("close temp: %w", err)
	}
	if err := os.Rename(tmpName, final); err != nil {
		_ = os.Remove(tmpName)
		return fmt.Errorf("rename: %w", err)
	}
	return nil
}
```

- [ ] **Step 4: Run, expect PASS**

Run: `cd /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye && go test -race ./internal/registry/... -v`
Expected: All PASS (TestMemCacheRoundTrip + TestDiskCacheMissThenHit + TestDiskCacheSurvivesNewInstance = 3 tests).

- [ ] **Step 5: Commit**

```bash
cd /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye && git add apps/birdseye/internal/registry/cache.go apps/birdseye/internal/registry/cache_test.go && git commit -m "feat(birdseye): on-disk module tarball cache with atomic writes"
```

## Notes & Style

- Strict TDD: tests first, fail first, then implement.
- `t.TempDir()` cleans up automatically — no need for `defer os.RemoveAll`.
- The `.birdseye-*.tmp` pattern lets `os.CreateTemp` substitute random bytes for `*`.
- `os.Rename` is atomic on the same filesystem. The temp file lives in the same dir as the final file precisely so the rename works atomically (cross-device renames fail).

## Code Organization

Append to the existing `cache.go`. Do NOT create `disk_cache.go` — the plan keeps both in one file.

## Self-Review Checklist

- [ ] Both new tests pass; original `TestMemCacheRoundTrip` still passes
- [ ] All tests run with `-race`
- [ ] Imports are merged into one block at the top of `cache.go`
- [ ] `NewDiskCache` creates the root directory with 0755
- [ ] `Put` writes to a temp file in the SAME directory as the final file, then renames
- [ ] On any error during Put, the temp file is cleaned up
- [ ] `Get` returns `(nil, false, nil)` for `os.ErrNotExist`, not an error
- [ ] Commit message exactly: `feat(birdseye): on-disk module tarball cache with atomic writes`
- [ ] Only the two `apps/birdseye/internal/registry/` files staged

## Report Format

- **Status:** DONE | DONE_WITH_CONCERNS | BLOCKED | NEEDS_CONTEXT
- Files modified
- Test count + race-clean confirmation
- Commit SHA
- Anything unexpected

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
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- 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.
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- 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.
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- 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

type: text

text: I'll implement Task 7 following strict TDD. Let me start by reading the existing files.

service_tier: standard

attributionAgent: general-purpose

attributionPlugin: superpowers

type: assistant


Read

type: direct


speed: standard


content:
1	// Package registry talks to a Crow server through its typed client and
2	// caches module tarballs on disk so repeated diffs against the same
3	// versions stay fast.
4	package registry
5
6	import (
7		"sync"
8
9		"github.com/immuta/operations/services/crow/pkg/api"
10	)
11
12	// Cache is the storage seam used by Registry. Production uses DiskCache;
13	// tests inject MemCache.
14	type Cache interface {
15		Get(api.Module) ([]byte, bool, error)
16		Put(api.Module, []byte) error
17	}
18
19	// MemCache is a thread-safe in-memory Cache implementation.
20	type MemCache struct {
21		mu    sync.RWMutex
22		items map[string][]byte
23	}
24
25	// NewMemCache returns an empty MemCache.
26	func NewMemCache() *MemCache {
27		return &MemCache{items: make(map[string][]byte)}
28	}
29
30	func memKey(m api.Module) string {
31		return m.Namespace + "/" + m.Name + "/" + m.Provider + "/" + m.Version
32	}
33
34	func (c *MemCache) Get(m api.Module) ([]byte, bool, error) {
35		c.mu.RLock()
36		defer c.mu.RUnlock()
37		b, ok := c.items[memKey(m)]
38		if !ok {
39			return nil, false, nil
40		}
41		return b, true, nil
42	}
43
44	func (c *MemCache) Put(m api.Module, body []byte) error {
45		c.mu.Lock()
46		defer c.mu.Unlock()
47		c.items[memKey(m)] = body
48		return nil
49	}
50


content:
1	package registry
2
3	import (
4		"testing"
5
6		"github.com/immuta/operations/services/crow/pkg/api"
7	)
8
9	func mod(version string) api.Module {
10		return api.Module{
11			ModuleIdentifier: api.ModuleIdentifier{Namespace: "iac", Name: "comply", Provider: "aws"},
12			Version:          version,
13		}
14	}
15
16	func TestMemCacheRoundTrip(t *testing.T) {
17		c := NewMemCache()
18		if _, ok, err := c.Get(mod("1.0.0")); err != nil || ok {
19			t.Fatalf("expected miss; got ok=%v err=%v", ok, err)
20		}
21		if err := c.Put(mod("1.0.0"), []byte("payload")); err != nil {
22			t.Fatalf("Put: %v", err)
23		}
24		got, ok, err := c.Get(mod("1.0.0"))
25		if err != nil || !ok {
26			t.Fatalf("expected hit; got ok=%v err=%v", ok, err)
27		}
28		if string(got) != "payload" {
29			t.Errorf("body = %q", got)
30		}
31	}
32


text:
Good. Now I'll follow TDD: append failing tests first, verify they fail, then implement.

**Step 1: Append failing tests to cache_test.go**


Edit

old_string:
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)
	}
}

new_string:
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)
	}
}

func TestDiskCacheMissThenHit(t *testing.T) {
	dir := t.TempDir()
	c, err := NewDiskCache(dir)
	if err != nil {
		t.Fatalf("NewDiskCache: %v", err)
	}
	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("disk-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) != "disk-payload" {
		t.Errorf("body = %q", got)
	}
}

func TestDiskCacheSurvivesNewInstance(t *testing.T) {
	dir := t.TempDir()
	c1, _ := NewDiskCache(dir)
	if err := c1.Put(mod("2.0.0"), []byte("persisted")); err != nil {
		t.Fatal(err)
	}
	c2, _ := NewDiskCache(dir)
	got, ok, err := c2.Get(mod("2.0.0"))
	if err != nil || !ok {
		t.Fatalf("expected hit; got ok=%v err=%v", ok, err)
	}
	if string(got) != "persisted" {
		t.Errorf("body = %q", got)
	}
}


content: The file /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye/internal/registry/cache_test.go has been updated successfully. (file state is current in your context — no need to Read it back)


text: **Step 2: Verify tests fail (compile error expected)**


Bash

command: cd /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye && go test ./internal/registry/... -run TestDisk -v 2>&1

description: Run disk cache tests expecting compile failure


toolUseResult:
Error: Exit code 1
# github.com/immuta/operations/apps/birdseye/internal/registry [github.com/immuta/operations/apps/birdseye/internal/registry.test]
internal/registry/cache_test.go:35:12: undefined: NewDiskCache
internal/registry/cache_test.go:56:11: undefined: NewDiskCache
internal/registry/cache_test.go:60:11: undefined: NewDiskCache
FAIL	github.com/immuta/operations/apps/birdseye/internal/registry [build failed]
FAIL


text:
Tests fail as expected with `undefined: NewDiskCache`. Now implement the `DiskCache`.

**Step 3: Append DiskCache to cache.go with merged imports**


Edit

old_string:
import (
	"sync"

	"github.com/immuta/operations/services/crow/pkg/api"
)

new_string:
import (
	"errors"
	"fmt"
	"os"
	"path/filepath"
	"sync"

	"github.com/immuta/operations/services/crow/pkg/api"
)


content: The file /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye/internal/registry/cache.go has been updated successfully. (file state is current in your context — no need to Read it back)


old_string:
func (c *MemCache) Put(m api.Module, body []byte) error {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.items[memKey(m)] = body
	return nil
}

new_string:
func (c *MemCache) Put(m api.Module, body []byte) error {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.items[memKey(m)] = body
	return nil
}

// DiskCache stores tarballs under
//
//	<root>/<namespace>/<name>/<provider>/<version>.tar.gz
//
// Writes are atomic via a temp file + rename.
type DiskCache struct {
	root string
}

// NewDiskCache creates the root directory if it does not exist.
func NewDiskCache(root string) (*DiskCache, error) {
	if err := os.MkdirAll(root, 0o755); err != nil {
		return nil, fmt.Errorf("mkdir cache root: %w", err)
	}
	return &DiskCache{root: root}, nil
}

func (c *DiskCache) path(m api.Module) string {
	return filepath.Join(c.root, m.Namespace, m.Name, m.Provider, m.Version+".tar.gz")
}

func (c *DiskCache) Get(m api.Module) ([]byte, bool, error) {
	b, err := os.ReadFile(c.path(m))
	if errors.Is(err, os.ErrNotExist) {
		return nil, false, nil
	}
	if err != nil {
		return nil, false, fmt.Errorf("read cache: %w", err)
	}
	return b, true, nil
}

func (c *DiskCache) Put(m api.Module, body []byte) error {
	final := c.path(m)
	if err := os.MkdirAll(filepath.Dir(final), 0o755); err != nil {
		return fmt.Errorf("mkdir cache dir: %w", err)
	}
	tmp, err := os.CreateTemp(filepath.Dir(final), ".birdseye-*.tmp")
	if err != nil {
		return fmt.Errorf("create temp: %w", err)
	}
	tmpName := tmp.Name()
	if _, err := tmp.Write(body); err != nil {
		_ = tmp.Close()
		_ = os.Remove(tmpName)
		return fmt.Errorf("write temp: %w", err)
	}
	if err := tmp.Close(); err != nil {
		_ = os.Remove(tmpName)
		return fmt.Errorf("close temp: %w", err)
	}
	if err := os.Rename(tmpName, final); err != nil {
		_ = os.Remove(tmpName)
		return fmt.Errorf("rename: %w", err)
	}
	return nil
}


text: **Step 4: Run all tests with race detector**


Bash

command: cd /Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye && go test -race ./internal/registry/... -v 2>&1

description: Run all registry tests with race detector


content:
=== RUN   TestMemCacheRoundTrip
--- PASS: TestMemCacheRoundTrip (0.00s)
=== RUN   TestDiskCacheMissThenHit
--- PASS: TestDiskCacheMissThenHit (0.00s)
=== RUN   TestDiskCacheSurvivesNewInstance
--- PASS: TestDiskCacheSurvivesNewInstance (0.00s)
PASS
ok  	github.com/immuta/operations/apps/birdseye/internal/registry	4.360s


text: All 3 tests pass, race-clean. **Step 5: Commit.**


command: git add apps/birdseye/internal/registry/cache.go apps/birdseye/internal/registry/cache_test.go && git commit -m "feat(birdseye): on-disk module tarball cache with atomic writes"

description: Stage and commit the two registry cache files


content:
[worktree-birdseye a278a7a] feat(birdseye): on-disk module tarball cache with atomic writes
 2 files changed, 99 insertions(+)


text:
---

**Status:** DONE

**Files modified:**
- `/Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye/internal/registry/cache.go` — merged import block (added `errors`, `fmt`, `os`, `path/filepath`), appended `DiskCache` struct + `NewDiskCache`, `path`, `Get`, `Put` methods
- `/Users/steve.briggs/projects/operations/.claude/worktrees/birdseye/apps/birdseye/internal/registry/cache_test.go` — appended `TestDiskCacheMissThenHit` and `TestDiskCacheSurvivesNewInstance`

**Test count:** 3 tests total (`TestMemCacheRoundTrip`, `TestDiskCacheMissThenHit`, `TestDiskCacheSurvivesNewInstance`) — all PASS, race-clean (`go test -race`)

**Commit SHA:** `a278a7a`

Nothing unexpected. TDD cycle was clean: compile error on undefined `NewDiskCache`, then all green after implementation.