simplify status command proposal to minimal scope

openspec/changes/add-status-command/proposal.md

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+# Add Status Command to OpenSpec CLI
+
+## Why
+
+Developers need to know which changes have all tasks completed and are ready to archive.
+
+## What Changes
+
+- Add `openspec status` command that scans the changes/ directory
+- Parse each tasks.md file to count `[x]` (complete) and `[ ]` (incomplete) tasks
+- Display each change with its completion status (e.g., "auth-feature: 5/5" or "auth-feature: ✓")
+- Skip the archive/ subdirectory
+
+## Impact
+
+- Affected specs: New capability `cli-status` will be added
+- Affected code:
+  - `src/cli/index.ts` - Add status command
+  - `src/core/status.ts` - New file with simple scanning and parsing logic (~50 lines)

openspec/changes/add-status-command/specs/cli-status/spec.md

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+# CLI Status Command Specification
+
+## Purpose
+
+The status command shows which OpenSpec changes are ready to archive by displaying task completion status for each change.
+
+## Command Interface
+
+```bash
+# Show status of all changes
+openspec status
+```
+
+## Behavior
+
+WHEN the status command runs:
+1. Scan the `openspec/changes/` directory
+2. Skip the `archive/` subdirectory
+3. For each change directory with a `tasks.md` file:
+   - Count tasks marked with `[x]` (case-insensitive)
+   - Count tasks marked with `[ ]`
+   - Display the change name and completion status
+
+## Output Format
+
+```
+add-auth-feature: 15/15
+fix-payment-bug: 8/8
+refactor-api: 3/10
+update-docs: 0/5
+```
+
+Or with checkmark for fully complete:
+
+```
+add-auth-feature: ✓
+fix-payment-bug: ✓  
+refactor-api: 3/10
+update-docs: 0/5
+```
+
+## Task Detection
+
+The command recognizes these patterns as tasks:
+- `- [ ]` Incomplete task
+- `- [x]` Complete task (lowercase)
+- `- [X]` Complete task (uppercase)
+
+## Error Handling
+
+- If no `tasks.md` exists, skip that change
+- If `tasks.md` is empty or has no tasks, skip that change
+- Continue scanning even if individual files have errors
+
+## Exit Codes
+
+- `0`: Success - status displayed
+- `1`: Error - unable to scan changes directory

openspec/changes/add-status-command/tasks.md

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+# Implementation Tasks for Status Command
+
+## Core Implementation
+- [ ] Add status command to `src/cli/index.ts`
+- [ ] Create `src/core/status.ts` with directory scanning logic
+- [ ] Parse tasks.md files to count `[x]` and `[ ]` patterns
+- [ ] Display each change with completion status (name: complete/total)
+- [ ] Skip the archive/ subdirectory when scanning