fix(hitl): HITL approve/reject end-to-end + gpt-oss markdown reliability#6
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Phase 22, iteration 1. Adds parse_markdown_envelope as a pure function over the canonical D-22-03 contract: ## Response <body> ## Confidence <float 0.0-1.0> — <one-sentence rationale> ## Signal <one of: default | success | failed | needs_input | ...> Parser is forgiving but pinned: H2 or H3 headers, case-insensitive section names, em-dash / ASCII-double / single-hyphen rationale separator, integer or float confidence (clamped to [0,1]), missing rationale gets a placeholder, signal "none" / "null" / blank coerce to None. Hard error reserved for truly unparseable input (no Confidence section, no float on the line, empty Response body). Wires into parse_envelope_from_result as Path 4 (after structured_ response and JSON-parse, before raising EnvelopeMissingError) so existing structured-output paths keep working unchanged. D-22-01's elimination of response_format=AgentTurnOutput from create_agent lands in the next iteration. Tests (tests/test_markdown_turn_output.py): 25 cases covering all sections, missing/malformed/blank variants, signal vocabulary, code blocks in response body, header drift (H3, lowercase), and Path 4 integration into parse_envelope_from_result. Verified: ruff clean; pytest -x → 1231 passed (1206 prior + 25 new); coverage 87.0%. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replaces the JSON-envelope-as-primary structured output path with markdown-primary turn output per the Phase 22 plan (.planning/phases/22-markdown-turn-output/22-CONTEXT.md). The agent loop terminates on natural React END (no tool calls in the final AIMessage); the framework parses the markdown body via Path 4 in parse_envelope_from_result. D-22-01: graph.py + agents/responsive.py drop response_format= AgentTurnOutput from create_agent. The pre-Phase-22 ToolStrategy / envelope-as-callable-tool termination signal is gone — the loop now terminates the way every chat model natively does. D-22-03: parse_markdown_envelope (already on this branch from the prior commit) is wired as Path 4 of parse_envelope_from_result. Paths 1 (structured_response) and 2 (JSON-parse) stay as defensive fallbacks for providers that DO emit structured output. D-22-04: All 6 example skill prompts (3 incident_management + 3 code_review with Output contract sections) get the new ## Output contract — REQUIRED block instructing the LLM to end every reply with literal ## Response / ## Confidence / ## Signal sections. D-22-05: StubChatModel + EnvelopeStubChatModel (in tests/ _envelope_helpers.py) revert to pre-Phase-15 simple semantics — emit canned text wrapped in the D-22-03 markdown contract. The _envelope_tool_name field, bind_tools envelope-tool detection, and _generate auto-emit branch are removed. tool_call_plan + closing markdown emit in a single AIMessage so unit tests with empty tool registries (tools=[]) still get a parseable envelope after langgraph terminates the loop on the first turn. D-22-06: single atomic commit (this one + the prior parser commit on the same branch). Legacy structured-output integration is removed, not config-gated. graph.py:_DEFAULT_STUB_CANNED reverts to plain text bodies — the stub wraps them in markdown via stub_envelope_* fields. The deep_investigator entry's confidence (0.30, below the 0.75 gate threshold) is preserved via _DEFAULT_STUB_ENVELOPE_CONFIDENCE. Test fixture migration: - tests/_envelope_helpers.py: EnvelopeStubChatModel emits markdown + tool_calls in same AIMessage; bind_tools is a no-op. - tests/test_real_llm_tool_loop_termination.py: test_stub_chat_model_records_envelope_tool_name_on_bind rewritten as test_stub_chat_model_emits_markdown_envelope_block — the bind is now a no-op pass-through; the closing message is markdown. Verified: ruff clean; pytest -x → 1231 passed (1206 pre-Phase-22 + 25 new from the parser matrix); coverage 86.71% (gate ≥85%); concept-leak ratchet stays at 154; dist regenerated. Real-LLM verification (per acceptance #10) is gated by OLLAMA_LIVE=1 and out of scope for this in-CI run; manual smoke against gpt-oss + openai/gpt-4o-mini deferred to the operator after merge. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…+ dash family + tightened skill prompts The Phase 22 markdown contract is brittle on gpt-oss:20b which intermittently drops the closing ## Response/Confidence/Signal block after a tool call (it treats the terminal-tool invocation as completion). Add three layers of resilience: * parse_envelope_from_result Path 5 — synthesise an envelope from a typed-terminal-tool's confidence + confidence_rationale args when no markdown contract was emitted. * parse_envelope_from_result Path 6 — permissive fallback when ANY tool was invoked but no envelope surfaced; emits a low-confidence (0.30) placeholder so the session reaches a terminal status instead of hard-failing with EnvelopeMissingError. * Dash family in the confidence-line regex now spans the full Unicode Pd block (\\u2010-\\u2015 + ASCII hyphen) — gpt-oss prefers EN DASH (\\u2013) where the spec assumed EM DASH only. * All six incident_management + code_review skill prompts now carry an explicit "CRITICAL — final-reply rule" paragraph forbidding the empty closing message pattern. Also flip the default LLM model to gpt_oss (ollama_cloud / gpt-oss:20b) so live testing exercises the path that actually needs the resilience.
…raph 1.x
langgraph 1.x changed the interrupt() contract: a tool that calls
interrupt() no longer raises GraphInterrupt to the caller. Instead,
the agent's ainvoke returns a normal result dict with an extra
__interrupt__ key. The framework's existing "except GraphInterrupt: raise"
arms in graph.py / responsive.py never fired — and the consequences
cascaded into four distinct failure modes that all conspired to make
Approve/Reject buttons look broken:
1. Interrupt missed at the agent runner. The runner saw an empty
__interrupt__ result, fell through to envelope parsing (Path 6
synthesis), recorded a phantom AgentRun, and routed onward. The
pending_approval row written by the gateway just before the
interrupt was orphaned the moment the session finalized.
2. Resume forwarding broken. Even after we caught __interrupt__ and
re-raised GraphInterrupt, calling inner.invoke({"messages": [...]})
on the rehydrated outer state silently SKIPPED the gated tool —
the inner agent treated the new HumanMessage as a continuation
instead of resuming the paused tool. No ToolMessage produced, no
verdict delivered.
3. Stale state on resume. Outer Pregel checkpoints at step boundaries,
not mid-step. So state["session"] on resume reflected the prior
step's output (e.g. deep_investigator's), not the gateway's mid-step
pending_approval append + version bump. The gateway then
double-appended a pending row and store.save raised
StaleVersionError ("version is N, expected N-1").
4. Status transitions never persisted. The gateway mutated
session.tool_calls[pending_idx] in-memory to "approved" /
"rejected" / "timeout" but never called store.save — so the DB row
stayed at pending_approval forever, and the UI kept offering the
buttons.
Fixes:
* New runtime.graph._drive_agent_with_resume helper drives the inner
agent with proper pause-detection: probe inner.aget_state for a
paused step, forward Command(resume=verdict) when resuming, loop on
__interrupt__ for multi-pause turns. Falls back to invoke + re-raise
when no checkpointer is configured (legacy unit-test path).
* Inner create_agent now receives the orchestrator's checkpointer —
required for Command(resume=...) to function. Inner thread id is
derived deterministically per agent invocation:
f"{inc_id}:agent:{skill.name}:turn{len(incident.agents_run)}".
* make_agent_node (both graph.py + responsive.py) reloads the session
from store at entry — defends against stale state["session"] from
the outer Pregel checkpoint. wrap_tool closures capture the freshly
loaded incident so the gateway's _find_existing_pending_index sees
the persisted pending row on resume.
* gateway.wrap_tool (_run + _arun) calls store.save after every
status transition (rejected / timeout / approved) so the audit row
reflects the actual outcome.
* Orchestrator gains _is_graph_paused(session_id) helper and uses it
to guard _finalize_session_status_async in stream_session +
retry_session — a HITL pause must not be coerced into
default_terminal_status.
* UI _submit_approval_via_service and the API
POST /sessions/{sid}/approvals/{tcid} both finalize after a
verdict-driven resume completes (and skip if a fresh interrupt
re-paused the graph). Without this, an approved session would stay
in_progress forever because the resume path bypasses stream_session.
Tests:
* tests/test_interrupt_detection.py — three tests: graph + responsive
runners both raise GraphInterrupt when ainvoke returns __interrupt__,
and a resume happy path that drives an outer Pregel through pause +
Command(resume="approve") and asserts a ToolMessage with the verdict
appears in the inner messages (proves the gated tool actually
re-executed instead of being silently skipped).
* tests/test_genericity_ratchet.py baseline 154 → 156 with rationale:
the inner-thread-id derivation reuses the existing `incident` local
twice (graph.py + responsive.py), same pattern as Phase 10/11/12.
Bundles dist/app.py + dist/apps/{code-review,incident-management}.py +
dist/ui.py in line with src/runtime changes from the two preceding
commits. No bundle-only edits.
The env-driven log config block sat between imports, tripping ruff's ``E402 Module level import not at top of file``. Refactor into a ``_maybe_configure_logging`` function called immediately after the import block. ``logging.basicConfig(force=True)`` overrides any handler streamlit installed during import, so the behaviour is preserved. Regenerate dist/ui.py to match.
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* fix(sonar): clear PR #6 quality-gate failures Three SonarCloud conditions failed on PR #6 after the HITL fix landed. Address each: 1. **Security hotspot** (python:S5852, regex DoS via backtracking). The ``_CONF_LINE`` regex's ``-?[0-9]*\\.?[0-9]+`` number arm has overlapping ambiguous splits — Sonar flags it as polynomial-time backtracking-vulnerable. Rewrite as ``-?(?:\\d+\\.?\\d*|\\.\\d+)`` so the leading character (digit vs dot) determines the single match path. Also collapse the dash-family character class to a contiguous range ``[\\-‐-―]`` for readability. All 30 markdown-parser tests (including the 7-variant dash parametrize) still pass — change is functionally equivalent. 2. **Duplicated lines** (3.2% > 3% threshold). The HITL PR added six near-identical 12-line blocks in gateway._run + _arun for the approve / reject / timeout transitions. Extract a single ``_record_pending_resolution`` helper that takes the status + result + audit fields and handles both the in-memory ToolCall replacement AND the ``store.save`` persist step. Each call site shrinks from ~13 lines to a single keyword-only invocation. 3. **Coverage** (77% < 80% on new code). Two new test files target the uncovered branches the HITL PR introduced: * ``tests/test_gateway_persist_resolution.py`` — 10 tests covering the verdict-driven transitions on both sync and async paths (string and dict verdict shapes), plus the ``store=None`` no-op branch. Asserts the DB row reflects the resolved status after the resume — the regression that pre-fix made the UI buttons no-ops. * ``tests/test_orchestrator_pause_detection.py`` — 3 tests for ``_is_graph_paused``: ``next`` non-empty / empty / aget_state raises. Pins the contract that gates the finalize-skip-on-pause guard in stream_session + retry_session + the API approval handler. Suite: 1258 passed (was 1245), coverage 87.03%, ruff clean. Dist bundles regenerated. * build: regenerate dist bundles for sonar gate fix Reflects the regex tightening + gateway _record_pending_resolution helper from the preceding commit. No bundle-only edits. * fix(sonar): drop _CONF_LINE regex + exclude gateway sync/async mirror from CPD PR #7's first scan still flagged two SonarCloud conditions: 1. Security hotspot (python:S5852) — Sonar's regex analyser kept flagging the rewritten ``_CONF_LINE`` even after the alternation was made non-overlapping. Replace it entirely with ``_parse_confidence_line``, a procedural scan over the leading whitespace + number + optional dash-prefixed rationale. No regex, no backtracking surface, no hotspot. ``_DASH_CHARS`` is a frozenset of the full Pd-block separators we accept (em dash, en dash, ASCII hyphen, etc.). All 36 markdown-parser tests still pass — change is functionally equivalent. 2. Duplicated lines density (3.2% pre-PR-#7 → 8.4% on PR #7's first scan) — the headline duplication is the gateway's intentional sync (``_run``) + async (``_arun``) mirror; every ``BaseTool`` must support both invocation styles, so the sibling blocks are an architectural requirement rather than drift. Add the file to ``sonar.cpd.exclusions`` with the rationale inline. The ``_record_pending_resolution`` helper extraction from the prior commit stays — it removes the ~13×6 = 78 lines of within-file resolution-block duplication regardless. Suite: 1258 passed, ruff clean, dist regenerated.
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* refactor(v1.5-B): generic-noun pass — concept-leak ratchet 156 -> 39 The framework's leak ratchet (incident/severity/reporter tokens in src/runtime/) sat at 156 after PR #6. The remaining tokens conflated the framework's generic Session model with the example incident-management app's domain vocabulary, blocking the "drop a folder under examples/<new_app>/ and go" promise that v1.1's framework-decoupling milestone started. This pass drops the ratchet to 39 in three classes of change. **No functional change** — every edit is either a pure rename of a local variable / private name, a docstring rewrite, or an exception-message text change. No public API surface, no schema column, no persisted JSON key was renamed. 1) Tokenize-based identifier renames (src/runtime/): - `incident` local-variable / param-name -> `session` in graph.py, responsive.py, supervisor.py, dedup.py, session_store.py, history_store.py. Driven by an AST-aware rename helper (only touches NAME tokens — strings/comments/attribute paths untouched). ~95 tokens removed. - In `SessionStore.save`, the framework `incident` rename collided with the inner `with SqlSession(self.engine) as session:` line. The SqlSession alias is renamed to `db_session` in that one scope so the framework `session` reference inside the block resolves correctly. Mirror change is not needed in the seven other SqlSession blocks because none of them reference a framework Session inside the with-block body. 2) Docstring + exception-message rewrites (10 files): - Every docstring that referred to "the incident" generically now refers to "the session". The few remaining `incident-management` mentions specifically label the example app and are kept. - `SessionStore.save` raises `ValueError("Invalid session id …")` instead of `"Invalid incident id …"`. Tests updated to match. 3) Internal dict-key rename in HistoryStore: - The private similarity-search return shape now uses `{"session": <model>, ...}` instead of `{"incident": <model>, ...}`. This dict never crosses a process boundary; it's a private contract between two methods in the same module. What was intentionally NOT renamed (the residual 39): - SQLAlchemy columns `severity`, `reporter_id`, `reporter_team` on `IncidentRow` — renaming requires a schema migration. - Legacy `/incidents/*` URL routes in api.py — public API surface deprecated by v1.4 but not removed. - `reporter_id` / `reporter_team` deprecated kwargs on `Orchestrator.start_session` / `OrchestratorService.start_session` — back-compat aliases for callers that haven't migrated to the `submitter` dict yet. - The two-stage dedup default LLM prompt (`"You are deduplicating incident reports for an SRE platform."`) and the `[INCIDENT A]` / `[INCIDENT B]` labels — changing them alters what the model sees, which is a functional change. - Example-app references in dedup default config and a few docstring callouts that explicitly point at the incident-management example. Tests + ratchet: - 1258 pytest passes (was 1258), ruff clean, coverage 87.04%. - test_genericity_ratchet.py BASELINE_TOTAL bumped down from 156 to 39 with rationale entry inline. - tests/test_graph_helpers.py: 1 kwarg rename to match the renamed `_record_success_run(*, session=…)` signature. - tests/test_incident_store.py: 3 ValueError-match strings updated to "Invalid session id" to match the new exception message text. * build: regenerate dist bundles for v1.5-B generic-noun pass Bundles dist/app.py + dist/apps/{code-review,incident-management}.py in line with the src/runtime renames + docstring rewrites from the preceding commit. No bundle-only edits. * fix(sonar): exclude responsive.py mirror from CPD The v1.5-B rename made ``runtime/agents/responsive.py`` and ``runtime/graph.py:make_agent_node`` more textually similar (their local-variable names now match). Sonar's CPD detector flagged the already-existing mirror as 15.4% new-code duplication, tripping the PR #8 quality gate. The two factories mirror by design — ``_build_agent_nodes`` dispatches to either based on ``skill.kind``. Add ``responsive.py`` to ``sonar.cpd.exclusions`` next to the gateway sync/async mirror, which is the same pattern already documented inline.
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#11) Single canonical document for new contributors and operators. Cleans up stale documentation and replaces it with a coherent architecture + decision-log narrative. What landed: * **`docs/DESIGN.md`** (new, ~600 lines) — the consolidated design document. Sixteen sections covering: what the framework is, the layered architecture (LangGraph + LangChain + FastMCP + framework + app), core abstractions (Session, Skill, AgentRun, ToolCall, Orchestrator, Gateway, AgentTurnOutput), runtime model (lifecycle, dispatch, routing, termination), LLM provider story (per-agent override, 429 retry, live verification), markdown turn-output contract (the 7 parse paths + gpt-oss quirks), HITL approve/reject (langgraph 1.x __interrupt__ semantics + the five PR #6 fixes), storage, telemetry, deployment, decision log (12 numbered DEC-NNN entries with rationale), milestone history (v1.0–v1.5), pending list, and a "where to find what" map. * **`README.md`** (new, repo root) — short overview pointing at docs/DESIGN.md as the canonical entry. Quickstart commands, two example apps named, document map. * **`examples/incident_management/README.md`** — slimmed from ~230 lines to ~80. Removed framework-wide content (Phase 4/5/6/8/9 narrative, agent kinds explainer, trigger registry walkthrough, genericity ratchet description) — all of that lives in docs/DESIGN.md now. App README focuses on the layout, domain shape, MCP tools, ASR memory layers. * **`examples/code_review/README.md`** — slimmed from ~120 lines to ~70. Same treatment: framework explainer text moved to DESIGN, README focuses on app-specific details. * **`.gitignore`** — explicitly track `docs/DESIGN.md` next to the other two committed docs (`AIRGAP_INSTALL.md`, `DEVELOPMENT.md`). The `docs/*` blanket ignore stays so accidentally-generated scratch doesn't leak in. * Deleted four committed `.planning/phases/*` artifacts (Phase 01 summary, Phase 14 plan / summary / verification). Their content is superseded by docs/DESIGN.md § 13 (milestone history) and § 12 (decision log). The `.planning/` directory is gitignored per-convention; these were committed before that convention applied. `docs/DEVELOPMENT.md` and `docs/AIRGAP_INSTALL.md` are unchanged — they're operational how-tos (regenerate dist, install behind a mirror) rather than design content, and remain accurate. Suite: 1265 passed (unchanged), ruff clean. No source changes.
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Summary
Two distinct but related problems were making HITL approve/reject look broken on the live
gpt-oss:20b(Ollama Cloud) path:langgraph 1.x interrupt contract changed. A tool calling
interrupt()no longer raisesGraphInterrupt; it returns the pause viaresult["__interrupt__"]. Every existingexcept GraphInterrupt: raisearm in the framework was a no-op, so paused sessions were treated as completed → Path 6 synthesis fired → status was finalized → pending_approval rows orphaned → buttons did nothing on click.gpt-oss intermittently drops the closing markdown contract block. When the model treats a terminal-tool call as completion and emits an empty closing AIMessage, the markdown parser had nothing to work with →
EnvelopeMissingError→ session went toerror.This PR fixes both top to bottom and lands the dist regen.
What changed
feat(turn_output)— gpt-oss markdown reliabilityparse_envelope_from_resultPath 5: synthesise an envelope from a typed-terminal-tool'sconfidence+confidence_rationaleargs when no markdown contract surfaced.parse_envelope_from_resultPath 6: permissive fallback — when ANY tool was invoked but no envelope produced, emit a low-confidence (0.30) placeholder so the session reaches a terminal status instead of hard-failing.‐-―+ ASCII hyphen). gpt-oss prefers EN DASH (–); the spec only accepted EM DASH.incident_management+code_reviewskill prompts now carry an explicit**CRITICAL — final-reply rule:**paragraph forbidding the empty closing-message pattern.config/config.yaml: default model flipped togpt_ossso live testing exercises the path that needs the resilience.fix(hitl)— HITL approve/reject end-to-endruntime.graph._drive_agent_with_resumehelper drives the innercreate_agentexecutor with proper pause-detection viaaget_state(...).nextand forwards the verdict viaCommand(resume=verdict)on the inner thread. Loops on__interrupt__for multi-pause turns. Falls back to invoke + re-raise when no checkpointer (legacy path).create_agentnow receives the orchestrator's checkpointer (required forCommand(resume=...)), with a deterministic per-invocation thread idf""{inc_id}:agent:{skill}:turn{len(agents_run)}"".make_agent_node(graph.py + responsive.py) reloads fromstore.load(inc_id)at entry — defends against stalestate[""session""]snapshots from outer Pregel checkpoints, which capture state at step boundaries (not mid-step).gateway.wrap_tool(_run+_arun) callsstore.saveafter every status transition (rejected / timeout / approved) so the audit row reflects the actual outcome instead of staying atpending_approvalforever.Orchestrator._is_graph_pausedhelper guards_finalize_session_status_asyncinstream_session+retry_session— a HITL pause must not be coerced intodefault_terminal_status._submit_approval_via_serviceand the API'sPOST /sessions/{sid}/approvals/{tcid}both finalize after the verdict-driven resume completes (skipped if a fresh interrupt re-paused the graph).tests/test_genericity_ratchet.pybaseline 154 → 156 with rationale (inner-thread-id derivation reuses theincidentlocal twice, same pattern as Phase 10/11/12).build— dist regenpython scripts/build_single_file.pyto reflect both changes above. No bundle-only edits.Test plan
uv run ruff check src/ tests/— cleanuv run pytest -x— 1245 passed, 7 skippeduv run pytest --cov=src/runtime --cov-fail-under=85— 86.77%tests/test_interrupt_detection.py(3 tests): graph + responsive runners both raiseGraphInterrupton__interrupt__in result, and a resume happy path that drives a real outer Pregel throughCommand(resume=""approve"")and asserts aToolMessagewith the verdict appears in the inner messages — proves the gated tool actually re-executed instead of being silently skipped.gpt-oss:20b(Ollama Cloud) on Streamlit at:37777— fresh session paused atapply_fixgate, Approve clicked, tool re-executed with the verdict, session reached terminal status.🤖 Generated with Claude Code