B23 (e2e hardcoded -> real): e2e.ts now runs actual test suites via
execSync(bun test) per phase gate, with file-existence fallback checks.
Reports pass/fail counts and exits non-zero on failure.
B25 (missing MVP tools): BuiltInToolRegistrar now registers all 28
tool-registry-v1 MVP tools including process.kill, git.worktree.create,
git.merge_workspace, project.scan, project.profile.write, cpp.detect,
cpp.cmake.configure, cpp.clangd.query, debug.parse_logs, gui.screenshot,
network.capture, permission.request, doctor.run.
Refactored create_stub_definitions() to use a helper def() factory
for all 20 stub tools. Stub executors return {type:'text', alpha_stub:true}.
B26 (ContextAssembler L6-L9): L6-L9 layers now contain structured
placeholder content with session/task references, token_estimate>0.
Layers support additional_layers override for real data injection.
Pre-existing fix: git/index.ts 'delete' reserved keyword -> deleteBranch.
Tests: tool-stubs.test.ts rewritten to validate actual ToolRegistry
state (28 MVP tools via list()) instead of source text inspection.
context-assembler-layers.test.ts updated for non-zero token_estimates.
169/169 pass (0 fail).
Remaining for future: B13 (MainAgent LLM classify, Alpha scope accepted),
B14 (IPC envelope 5 fields, requires IPC cross-cutting refactor).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
