Files
Martin Vogel f59d24fd10 fix(mcp): make every tool reply client-usable — structuredContent, pipelining, config get (#1522)
Three regressions shipped in 0.10.0 share one failure shape: an empty result
with a success status, indistinguishable from "nothing found" for the LLM
clients that are cbm's primary consumers.

1) structuredContent {} on the whole tree-format surface (#1522 bug 1).
   #1488 replaced the duplicated payload with an EMPTY structuredContent
   object while every tool still declared a blanket permissive outputSchema.
   Spec-honoring clients (Claude Code among them) treat structuredContent as
   THE result when a schema is declared, so search_graph, trace_path,
   query_graph, get_architecture, search_code, and detect_changes all rendered
   as literally "{}" on their DEFAULT format, on every platform. The corrected
   contract: no tool declares an outputSchema (tool output is
   format-parameter-polymorphic — no static schema is truthful), JSON-object
   payloads keep their parsed structuredContent, errors keep
   structuredContent.error, and text-shaped payloads carry NO structuredContent
   key at all — which also preserves #1375's no-duplication win.

2) Frontend queue overflow killed the session (found by the #1522 sweep).
   Any 7+ requests pipelined in one stdin burst — an agent issuing parallel
   tool calls does exactly this — overflowed the 8-frame frontend queue, which
   failed the whole session: rc=1 with ZERO bytes of output, every buffered
   response lost. A full queue is now backpressure: the stdin reader blocks
   until the worker drains (bounded by the same stop/fail flags every teardown
   path already sets); only a single frame larger than the entire 12 MiB byte
   budget — which could never be admitted — remains a hard failure.

3) config get printed "" with exit 0 for every unset and every unknown key
   (#1522 bug 2). list printed stored-or-DEFAULT while get printed
   stored-or-EMPTY, and no subcommand validated key names, so a typo was
   indistinguishable from a correctly-read setting. One config-key table now
   drives help, list, get, set, and reset: get prints the stored value or the
   key's real default (the same fallback the runtime readers use), and unknown
   keys error with exit 1 on get, set, and reset alike.

Tests — each RED on the pre-fix tree and RED again on revert:
  * test_mcp.c: text results carry no structuredContent key; tools/list
    declares no outputSchema; the tool-table guard now binds all three
    branches (absent / parsed-object / error) for every registered tool.
  * test_daemon_frontend.c: the over-capacity contract flips from
    "session fails" to "backpressure without loss" — the held first request
    plus all 32 over-capacity frames are answered and the run closes cleanly.
  * test_cli.c: the config command contract — defaults, round-trip, reset,
    and unknown-key rejection on all three subcommands.
  * smoke-test.sh: Phase 3z rewritten to the corrected structuredContent
    contract, new Phase 3z1 (default-format replies usable in schema-honoring
    clients, no outputSchema advertised), 3z2 (24 pipelined calls all
    answered), 3z3 (config defaults + unknown-key rejection) — all asserted
    against the SHIPPED artifact, where #1488's smoke phase previously pinned
    the empty-object behavior as correct.

Verified end-to-end on the locally built production binary: all 15 tools
declare no schema; text tools return ABSENT structuredContent, object tools
populated, error envelopes intact; 7/24/64-deep pipelined bursts all answered
with rc=0; config get prints real defaults and exits 1 on unknown keys.
hook_augment (structuredContent.projects) and index_resilience
(structuredContent.status) consume object payloads and are unaffected.

Fixes #1522.

Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
2026-08-11 01:12:59 +02:00
..

scripts/ — the canonical leg entries

The doctrine (enforced, not advisory): a venue may provision a machine; only a canonical leg script may exercise the product. Local CI, PR CI, the dry run and the release all call the SAME files below — venues differ only in host specs, architecture and inputs, never in what a leg does. Platform differences (arm64 sanitizer flags, native Windows behavior, the Linux portable binary) live INSIDE these scripts, once, never per-venue. tests/test_venue_parity_contract.sh (run as Step 0j of every test leg) turns any violation — inline harness logic in a workflow, a bypassed wrapper, a missing --help — into a red build.

Every entry answers --help (authoritative, agent-oriented: modes, env, exit codes) and rejects unknown flags with exit 2 + Please consult --help.

The legs

leg entry what a run gives you
test test.sh DEFAULT = the venue leg: static contracts (Step 0a0r) + CLEAN ASan+UBSan build + all suites via the parallel harness + prod-binary guards. --suites a,b = iteration mode (incremental rebuild, subset, seconds). --tsan = the ThreadSanitizer leg. CLANGARM64 gets CI's trap-UBSan flags automatically.
package wrappers ci/test-package-wrappers.sh Go, npm, and PyPI runtime-set publication/lock suites on the current host. CI runs the same entry on Linux and Windows so both platform lock implementations gate.
build build.sh CLEAN production runtime set (native executable + authenticated integration asset; --with-ui adds one content-addressed UI pack). ccache via env.sh makes repeats fast; CCACHE_COMPILERCHECK=content guarantees a hit is byte-identical to a cold compile — never stale. --version, STATIC=1, BUILD_DIR=.
lint lint.sh clang-tidy + cppcheck + clang-format (+ no-skips policy). --ci = the CI gate set (no clang-tidy). Drives the same make targets as make lint/lint-ci.
smoke (unix) smoke-local.sh Stages a full release fixture, serves it on a kernel-assigned port, runs smoke-test.sh (ALL phases incl. download/install/update E2E) inside a disposable HOME/XDG/TMP sandbox. ui variant makes a missing verified UI pack a FAILURE. CBM_SMOKE_ARTIFACT_DIR = smoke an extracted release artifact verbatim (release mode).
smoke (windows) ../test-infrastructure/vm/vm-smoke.sh Same verified runtime-set contract on the real Windows VM, plus the user-PATH registry guard (prepare/verify/cleanup).
smoke-invariants smoke-invariants.sh Production-path resilience battery (MCP handshake, all tools invocable, malformed-input handling, supervised crash/hang recovery) — no fixture server or install E2E. smoke.yml runs an explicitly seam-enabled build on the WIDEST source matrix; release artifacts remain seam-free and use the release-shaped smoke legs above.
soak soak-legs.sh The release-gating soak SEQUENCE: quick then query-leak (the #581 detector — never reindexes, so RSS growth = query-path leak), each guarded by a completion-summary check. --legs quick for the ASan single-leg variant. Duration is per leg.

Internal harnesses — never called directly by a venue (the contract forbids it): smoke-test.sh (phases; wrappers provide fixture server + sandbox), soak-test.sh (one soak run; soak-legs.sh provides the sequence + guards), run-tests-parallel.sh (reached through test.sh).

Conventions

  • Exit codes: 0 = pass · 2 = usage error · 90 = guard (a run died without its completion summary — never counts as green) · anything else = the leg's real failure.
  • Iteration is a flag, not a side-tool: the fast paths (--suites, --legs) are modes of the SAME entry the gates run, so a dev loop can never drift from the venue behaviour.
  • Env sandboxing: the smoke wrappers neutralize every agent-config destination override; a smoke can never scribble on your real config.
  • Iterating on a change: scripts/test.sh --suites <suite> (seconds, incremental, same ASan+UBSan flags as the gate). List suites: build/c/test-runner --list-suites. Debugging a Windows-on-ARM trap: re-run with SANITIZE= for a plain build, or use the emulated win.sh ubsan-* pair for full diagnostics.
  • Before any push (the 3-OS ladder): scripts/test.sh (macOS, full) → ./test-infrastructure/run.sh full (Linux + TSan + smoke) → test-infrastructure/vm/win.sh test-par + guards + smoke-install (+ soak when the change touches memory/daemon paths).
  • Concurrency-touching change: add scripts/test.sh --tsan early — the same leg CI gates on.
  • Release-shaped verification: CBM_SMOKE_ARTIFACT_DIR=<extracted artifact> scripts/smoke-local.sh <binary> [ui] smokes exactly what would ship.
  • A leg is red in CI but green locally: first suspect environment shape, not code — the preflights (win.sh automatic; scripts/ci/preflight-docker.sh) and test-infrastructure/README.md's residuals list cover the knowable differences.

See scripts/ci/README.md for the CI plumbing and test-infrastructure/README.md for the venue map.