Two docs covering load-bearing patterns from today's work that
weren't previously discoverable:
1. workspace/platform_tools/README.md — explains the ToolSpec
single-source-of-truth pattern (#2240), the CLI-block alignment
gap that hand-maintained generation can't close (#2258), the
snapshot golden files + LF-pinning (#2260), and the add/rename/
remove playbook. The next reader who lands in
workspace/platform_tools/ now has the design rationale + the
safe-edit procedure colocated with the code.
2. scripts/README.md — disambiguates the three measure-coordinator-
task-bounds.sh files that now exist across two repos:
- scripts/measure-coordinator-task-bounds.sh (canonical OSS, this repo)
- scripts/measure-coordinator-task-bounds-runner.sh (Hermes/MiniMax variant, this repo)
- scripts/measure-coordinator-task-bounds.sh (production-shape, in molecule-controlplane)
Cross-references reference_harness_pair_pattern (auto-memory) for
the cross-repo design rationale. Documents the common safety
pattern (cleanup trap, DRY_RUN, non-target guard,
cleanup_*_failed events) and the heartbeat-trace caveat.
Refs: #2240, #2254, #2257, #2258, #2259, #2260; molecule-controlplane#321.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two follow-ups from the #2240 code review:
1. Snapshot tests for the rendered tool-instruction blocks. The
structural tests added in #2240 guarantee tool NAMES are present;
these new tests pin the SHAPE — bullet ordering, heading style,
footer placement — so a future contributor who reorders fields in
`_render_section` or rewrites a `when_to_use` paragraph sees the
diff in CI rather than shipping a silently-different system prompt.
Golden files live under workspace/tests/snapshots/.
2. CLI-block alignment test + corrected source-of-truth comment.
`_A2A_INSTRUCTIONS_CLI` is a separate hand-maintained surface for
ollama and other non-MCP runtimes — the registry can't auto-generate
it because the CLI subprocess interface uses different command
shapes (`peers` vs `list_peers`, etc.). A new
`_CLI_A2A_COMMAND_KEYWORDS` mapping declares the registry-tool →
CLI-keyword correspondence (or explicit `None` for tools not
exposed via subprocess). Two tests enforce coverage:
- every a2a tool in the registry is keyed in the mapping
- every non-None subcommand keyword literally appears in
`_A2A_INSTRUCTIONS_CLI`
Caught one real gap: `send_message_to_user` is in the registry but
has no CLI subcommand. Mapped to `None` with an explanatory comment.
The "no other source of truth" claim in registry.py's docstring
was wrong post-#2240 (the CLI block survived) — corrected to
describe the two surfaces explicitly and point at the alignment
tests as the gate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Establishes workspace/platform_tools/registry.py as THE place tool
naming and docs live. Every consumer reads from it; nothing duplicates
the source. Closes the architectural gap behind the doc/tool drift
discussion 2026-04-28 — adding hundreds of future runtime SDK adapters
should not require touching tool names anywhere except the registry.
What the registry owns
ToolSpec dataclass with: name, short (one-line description), when_to_use
(multi-paragraph agent-facing usage guidance), input_schema (JSON Schema),
impl (the actual coroutine in a2a_tools.py), section ('a2a' | 'memory').
TOOLS list with 8 entries — delegate_task, delegate_task_async,
check_task_status, list_peers, get_workspace_info, send_message_to_user,
commit_memory, recall_memory.
What now reads from the registry
- workspace/a2a_mcp_server.py
The hardcoded TOOLS list (167 lines of hand-maintained dicts) is
gone. Replaced with a 6-line list comprehension over the registry.
MCP description = spec.short. inputSchema = spec.input_schema.
- workspace/executor_helpers.py
get_a2a_instructions(mcp=True) and get_hma_instructions() now
GENERATE the agent-facing system-prompt text from the registry.
Heading + per-tool bullet (spec.short) + per-tool when_to_use +
a section-specific footer. No more hand-maintained instruction
blocks that drift from reality.
- workspace/builtin_tools/delegation.py
Renamed delegate_to_workspace -> delegate_task_async to match
registry. check_delegation_status -> check_task_status. Added
sync delegate_task @tool wrapping a2a_tools.tool_delegate_task
(was missing for LangChain runtimes — CP review Issue 3).
- workspace/builtin_tools/memory.py
Renamed search_memory -> recall_memory to match registry.
- workspace/adapter_base.py, workspace/main.py
Bundle all 7 core tools (was 6) into all_tools / base_tools.
- workspace/coordinator.py, shared_runtime.py, policies/routing.py
Updated system-prompt-text references to use the registry names.
Structural alignment tests
workspace/tests/test_platform_tools.py — 9 tests pin every
registry-to-adapter mapping:
- registry names are unique
- a2a + memory partition is complete (no orphans)
- by_name lookup works
- MCP server registers exactly the registry's tool set
- MCP description equals registry.short for every tool
- MCP inputSchema equals registry.input_schema for every tool
- get_a2a_instructions text contains every a2a tool name
- get_hma_instructions text contains every memory tool name
- pre-rename names (delegate_to_workspace, search_memory,
check_delegation_status) cannot leak back
Adding a future tool means adding one ToolSpec; the test failure
list tells the author exactly which adapter to update.
Adapter pattern for future SDK support
When (e.g.) AutoGen or Pydantic AI gets adapters, the only work
needed for tool surfacing is "wrap registry.TOOLS in your SDK's
tool format." Names, descriptions, schemas, impl come from the
registry — adapter author writes zero strings.
Why this needed to ship now
PR #2237 (already in staging) injected MCP-world docs as the
default system-prompt content. Without the registry, those docs
said "delegate_task" while LangChain runtimes only had
"delegate_to_workspace" — workers see docs for tools that don't
exist (CP review Issue 1+3). PR #2239 was a tactical rename;
this PR is the structural fix that prevents the same class of
drift from recurring as new adapters ship.
PR #2239 was closed in favor of this — same renames, plus the
registry, plus structural tests. Single coherent change.
Tests: 1232 pass, 2 xfailed (pre-existing). 9 new in
test_platform_tools.py; 4 alignment tests in test_prompt.py from
#2237 still pass; original test_executor_helpers tests adapted to
the registry-driven world.
Refs: CP review Issues 1, 2, 3, 5; project memory
project_runtime_native_pluggable.md (platform owns A2A);
project memory feedback_doc_tool_alignment.md (this is the structural
fix for the tactical lesson).
