fix(opencode): resolve command agent ids to registered opencode agents (#2477)

The `.opencode/commands/*.md` frontmatter referenced agents with the Claude
Code plugin namespace (`agent: everything-claude-code:<name>`), but ECC's
opencode integration registers its agents unscoped in `opencode.json`'s
`agent` map (`code-reviewer`, `planner`, ...), and that file's own `command`
section already references them unscoped. The `everything-claude-code:` scope
resolves under no opencode config (the opencode plugin package is
`ecc-universal`, and inline-config agents are bare), so subtask commands like
`/code-review` hard-fail with `Agent not found: everything-claude-code:code-reviewer`.
Non-subtask commands fall back to the default agent and appear to work — which
is why only some commands failed.

Strip the `everything-claude-code:` prefix from all 30 command frontmatter
agent ids so they match the registered agents, fix the MIGRATION.md example,
and replace the test that enforced the broken scoped invariant with one that
asserts each command agent id is a registered opencode agent (fails on the old
scoped ids, passes on the fix).

Fixes #2477

.opencode/MIGRATION.md

@@ -184,7 +184,7 @@ Create a detailed implementation plan for: {input}
 ```markdown
 ---
 description: Create implementation plan
-agent: everything-claude-code:planner
+agent: planner
 ---
 
 Create a detailed implementation plan for: $ARGUMENTS

.opencode/commands/build-fix.md

@@ -1,6 +1,6 @@
 ---
 description: Fix build and TypeScript errors with minimal changes
-agent: everything-claude-code:build-error-resolver
+agent: build-error-resolver
 subtask: true
 ---
 

.opencode/commands/checkpoint.md

@@ -1,6 +1,6 @@
 ---
 description: Save verification state and progress checkpoint
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Checkpoint Command

.opencode/commands/code-review.md

@@ -1,6 +1,6 @@
 ---
 description: Review code for quality, security, and maintainability
-agent: everything-claude-code:code-reviewer
+agent: code-reviewer
 subtask: true
 ---
 

.opencode/commands/e2e.md

@@ -1,6 +1,6 @@
 ---
 description: Generate and run E2E tests with Playwright
-agent: everything-claude-code:e2e-runner
+agent: e2e-runner
 subtask: true
 ---
 

.opencode/commands/eval.md

@@ -1,6 +1,6 @@
 ---
 description: Run evaluation against acceptance criteria
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Eval Command

.opencode/commands/evolve.md

@@ -1,6 +1,6 @@
 ---
 description: Analyze instincts and suggest or generate evolved structures
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Evolve Command

.opencode/commands/go-build.md

@@ -1,6 +1,6 @@
 ---
 description: Fix Go build and vet errors
-agent: everything-claude-code:go-build-resolver
+agent: go-build-resolver
 subtask: true
 ---
 

.opencode/commands/go-review.md

@@ -1,6 +1,6 @@
 ---
 description: Go code review for idiomatic patterns
-agent: everything-claude-code:go-reviewer
+agent: go-reviewer
 subtask: true
 ---
 

.opencode/commands/go-test.md

@@ -1,6 +1,6 @@
 ---
 description: Go TDD workflow with table-driven tests
-agent: everything-claude-code:tdd-guide
+agent: tdd-guide
 subtask: true
 ---
 

.opencode/commands/instinct-export.md

@@ -1,6 +1,6 @@
 ---
 description: Export instincts for sharing
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Instinct Export Command

.opencode/commands/instinct-import.md

@@ -1,6 +1,6 @@
 ---
 description: Import instincts from external sources
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Instinct Import Command

.opencode/commands/instinct-status.md

@@ -1,6 +1,6 @@
 ---
 description: Show learned instincts (project + global) with confidence
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Instinct Status Command

.opencode/commands/learn.md

@@ -1,6 +1,6 @@
 ---
 description: Extract patterns and learnings from current session
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Learn Command

.opencode/commands/orchestrate.md

@@ -1,6 +1,6 @@
 ---
 description: Orchestrate multiple agents for complex tasks
-agent: everything-claude-code:planner
+agent: planner
 subtask: true
 ---
 

.opencode/commands/plan.md

@@ -1,6 +1,6 @@
 ---
 description: Create implementation plan with risk assessment
-agent: everything-claude-code:planner
+agent: planner
 subtask: true
 ---
 

.opencode/commands/projects.md

@@ -1,6 +1,6 @@
 ---
 description: List registered projects and instinct counts
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Projects Command

.opencode/commands/promote.md

@@ -1,6 +1,6 @@
 ---
 description: Promote project instincts to global scope
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Promote Command

.opencode/commands/refactor-clean.md

@@ -1,6 +1,6 @@
 ---
 description: Remove dead code and consolidate duplicates
-agent: everything-claude-code:refactor-cleaner
+agent: refactor-cleaner
 subtask: true
 ---
 

.opencode/commands/rust-build.md

@@ -1,6 +1,6 @@
 ---
 description: Fix Rust build errors and borrow checker issues
-agent: everything-claude-code:rust-build-resolver
+agent: rust-build-resolver
 subtask: true
 ---
 

.opencode/commands/rust-review.md

@@ -1,6 +1,6 @@
 ---
 description: Rust code review for ownership, safety, and idiomatic patterns
-agent: everything-claude-code:rust-reviewer
+agent: rust-reviewer
 subtask: true
 ---
 

.opencode/commands/rust-test.md

@@ -1,6 +1,6 @@
 ---
 description: Rust TDD workflow with unit and property tests
-agent: everything-claude-code:tdd-guide
+agent: tdd-guide
 subtask: true
 ---
 

.opencode/commands/security-scan.md

@@ -1,6 +1,6 @@
 ---
 description: Run AgentShield against agent, hook, MCP, permission, and secret surfaces.
-agent: everything-claude-code:security-reviewer
+agent: security-reviewer
 subtask: true
 ---
 

.opencode/commands/security.md

@@ -1,6 +1,6 @@
 ---
 description: Run comprehensive security review
-agent: everything-claude-code:security-reviewer
+agent: security-reviewer
 subtask: true
 ---
 

.opencode/commands/setup-pm.md

@@ -1,6 +1,6 @@
 ---
 description: Configure package manager preference
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Setup Package Manager Command

.opencode/commands/skill-create.md

@@ -1,6 +1,6 @@
 ---
 description: Generate skills from git history analysis
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Skill Create Command

.opencode/commands/tdd.md

@@ -1,6 +1,6 @@
 ---
 description: Enforce TDD workflow with 80%+ coverage
-agent: everything-claude-code:tdd-guide
+agent: tdd-guide
 subtask: true
 ---
 

.opencode/commands/test-coverage.md

@@ -1,6 +1,6 @@
 ---
 description: Analyze and improve test coverage
-agent: everything-claude-code:tdd-guide
+agent: tdd-guide
 subtask: true
 ---
 

.opencode/commands/update-codemaps.md

@@ -1,6 +1,6 @@
 ---
 description: Update codemaps for codebase navigation
-agent: everything-claude-code:doc-updater
+agent: doc-updater
 subtask: true
 ---
 

.opencode/commands/update-docs.md

@@ -1,6 +1,6 @@
 ---
 description: Update documentation for recent changes
-agent: everything-claude-code:doc-updater
+agent: doc-updater
 subtask: true
 ---
 

.opencode/commands/verify.md

@@ -1,6 +1,6 @@
 ---
 description: Run verification loop to validate implementation
-agent: everything-claude-code:build
+agent: build
 ---
 
 # Verify Command