Commit Graph

9 Commits

Author SHA1 Message Date
Tom Boucher
ad3b9ec486 chore(#1671): fragmentize plan-phase.md and repair flag forwarding to the init bundle — Phase 6.2 (#3019)
* chore(#2993): fragmentize plan-phase.md onto the fragment model

Epic #1671 Phase 6.2. plan-phase.md is the largest workflow in the repo and
carried zero markers; it was deferred out of the Phase 3 pilot for two
reasons, both now dead. The 36-byte PRE_PHASE6 headroom was never the
blocker it looked like — fragmentizing is net-negative on host source, so
the trim is what creates the room. The --mvp interleaving was resolved by
measurement in #2992 and no sub-line mechanism is built.

- widen WHEN_VOCABULARY 14 -> 19 via a second coordinated ADR-1671
  amendment: flag:--ingest, flag:--prd, flag:--research-phase,
  flag:--reviews, state:chunked-mode
- state:chunked-mode is `--chunked` OR config workflow.plan_chunked, and
  that disjunction is resolved in the FACT, never in the grammar, so a
  compound condition never becomes an operator
- parse the new flags on the plan-phase route; extract six gated bodies to
  gsd-core/workflows/plan-phase/steps/ behind manifest-gated stubs
- prd-express-path.md was already extracted but read unconditionally; its
  wrapper is now gated, so the existing extraction finally pays off

plan-phase.md 94,483 -> 87,575 bytes (cap 94,519): headroom goes from 36
bytes to 6,944.

Also closes a surfaced docs gap: five real plan-phase flags (--chunked,
--skip-ui, --bounce, --skip-bounce, --granularity) were documented in
neither the argument-hint nor help. Making --chunked load-bearing without
fixing its siblings would leave the defect class half-open.

Refs #2993

* fix(#2993): forward flags to the init bundle so section gating actually fires

Blocker found by the correctness review, confirmed directly, and missed by
both the isolated reviewer and every test in this branch.

Neither workflow forwarded its flags to the init CLI:

  plan-phase.md:71    INIT=$(gsd_run query init.plan-phase "$PHASE" $GRAN_PARAM)
  execute-phase.md:84 INIT=$(gsd_run query init.execute-phase "${PHASE_ARG}")

So every flag: atom was permanently false in production and its section
permanently excluded. For plan-phase that made the PRD express path
UNREACHABLE — a regression, since it was an unconditional read before.
For execute-phase this is PRE-EXISTING: #2932 shipped `flag:--wave` gating
that has never once been true, so `--wave` silently dropped its own
wave-filtering guidance. Fixed here under the no-defer rule.

Why every test missed it: they drive the init CLI directly with flags,
which works. Production goes through the workflow's bash line, which did
not pass them — the exact "assert against the shape production uses" trap
this branch's own test matrix warns about.

- parse and forward --prd/--ingest/--research-phase/--reviews/--chunked
  (plan-phase) and --wave (execute-phase), using the anchored regex idiom
  the neighbouring GRAN_PARAM line already uses
- add a regression guard DERIVED FROM THE MANIFEST: for every flag:--X
  section, the owning workflow's init line must forward --X. It fails
  against the pre-fix files and covers any future atom, rather than
  spot-checking today's six.

Verified through the workflow shape, not the CLI shape: `3 --prd spec.md`
now yields ["prd-express-gate"] (was []), `2 --wave 2` yields
["partial-wave"] (was []).

Refs #2993

* test(#2993): acknowledge the execute-phase ripple and regenerate install-tree fixtures

Remote matrix was red with 46 unique failures, identical on both lanes.
Both causes are mechanical consequences of changing shipped workflow
content, and neither is visible to any local gate.

- emitted-attribution: execute-phase.md grew 163 bytes from the WAVE_PARAM
  forwarding fix and was unacknowledged, while the ack fragment named
  plan-phase.md, which SHRANK and therefore needed no ack at all — a stale
  entry is itself a failure. The reason now names the real ripple.
  The entry had to merge into the existing 2930 fragment: the ack linter
  does unconditional cross-fragment duplicate-key detection with no
  spent/live exception, so a second fragment declaring execute-phase.md
  collides even when the first is already merged and inert. Resolved per
  the linter's own guidance and that file's precedent of appending
  successive ripple reasons to one entry.
- golden-install-tree: tests/fixtures/install-tree/*.json are committed and
  deliberately excluded from the ADR-2719 attribution cutover, so they must
  be regenerated when shipped tree content changes. Regenerated after
  build:lib per the ordering landmine. 19 runtimes each gained exactly the
  six new plan-phase step files; zero paths removed, which is the absolute
  failure shape those fixtures exist to catch.

Refs #2993

* fix(#2993): restore the launcher preamble in an extracted step and follow moved content in its drift guards

Second red run: 26 unique failures, identical on both lanes, in two classes.

RUNTIME BUG (runtime-launcher-parity, 7 failures) — chunked-planning-mode.md
calls gsd_run but carried no canonical launcher preamble, which is what
DEFINES gsd_run(). On any non-Claude runtime that step would fail outright.
The preamble is now copied verbatim from the canonical source of truth,
gsd-core/workflows/_runtime-launcher.snippet.sh, and the fence dedented to
column 0 to match the prd-express-path.md sibling (a list-continuation
indent breaks the byte-equal preamble match). prd-express-path.md already
had a correct one. This is the same defect #2932 hit when it extracted
steps; the parity test caught a real bug, not a stale assertion.

DRIFT GUARDS (plan-phase-drift-guard, issue-2762-plan-reviews-chunked,
skill-frontmatter-contract) — these assert plan-phase.md contains content
this branch moved into step files. Retargeted at where the content now
lives, with the asserted property unchanged; the ALL-RUNTIMES label COUNT
test now reads host + every step file so the count is preserved across the
split rather than reduced. Each retargeted guard was verified to still fail
when its step file is stripped, so none was weakened into vacuity.

No emitted-drift ack was needed: currentSizes() enumerates
gsd-core/workflows/*.md non-recursively, so files under
plan-phase/steps/ are never in the size ratchet's scope.

Refs #2993

* chore(#2993): backfill changeset pr number to 3019

---------

Co-authored-by: sim <sim@local>
2026-08-03 09:38:58 -04:00
Tom Boucher
f1af47766a chore(#1671): widen the when= grammar and key the section manifest per workflow — Phase 6.1 (#3013)
* chore(#2992): widen the when= grammar and key the section manifest per workflow

Epic #1671 Phase 6.1. Two blockers stopped the fragment model reaching any
file beyond execute-phase.md: the when= vocabulary was frozen at 4 atoms
(3 execute-phase-specific), and the section manifest was single-workflow by
construction with 'execute-phase' hardcoded into buildSectionManifestField.

- widen WHEN_VOCABULARY 4 -> 14 via a coordinated ADR-1671 amendment; the
  grammar stays CLOSED (one atom, no operators, negation or nesting) and
  WHEN_PREDICATES stays a hand-written literal map, never deriving a
  predicate from its atom string
- InvocationFacts gains flags: ReadonlySet<string> plus three computed state
  booleans; add the missing reverse vocabulary/predicate parity guard
- key the manifest artifact per workflow; a stale flat {sections:[...]}
  artifact now fails shape validation instead of being misattributed
- wire the field into six init entry points and parse the flags each needs

An atom ships only with both a real consuming section and a fact the init
seam actually computes. Six surveyed atoms are withheld because their
workflows have no dedicated init entry point; an atom without a computed
fact evaluates false forever and silently disables its own section.

Fixes a defect found while wiring: parseNamedArgs always materializes a
boolean flag key, so folding its false into the absent sentinel is required
or every flag reads as present and gating is silently always-on.

Also resolves ADR-1671:194 by measurement: --mvp stays unmarkable, because
its interleaved sites are always-run flag resolution and a ~340 byte block
that already delegates lazily.

Refs #2992

* fix(#2992): treat any falsy option value as an absent flag and reject unsafe manifest read paths

Findings from two orthogonal reviews (Claude /code-review + an isolated
adversarial pass); both independently reproduced the first one.

- MAJOR: the flags-builder treated only `undefined` as absent, but
  parseNamedArgs yields `null` for an absent value-flag and `false` for an
  absent boolean-flag, so `--granularity` read as present on every
  plan-phase invocation. Fixed at the root: a flag is present iff its
  option value is truthy. The six per-handler `|| undefined` folds are now
  redundant and removed, which also closes the duplicate-translation and
  missed-onboard-handler findings.
- MAJOR: state:needs-codebase-map had zero coverage. Added unit, property
  and real-CLI integration tests.
- MINOR: reject absolute, UNC/drive and `..`-traversing `read` paths in the
  manifest, degrading the whole load to null like every other shape
  violation. Verified: `/etc/passwd` previously reached section_manifest.read.
- MINOR: corrected a stale "4 to 20" doc comment; the vocabulary is 14.

Refs #2992

* test(#2992): update the generator suite for the per-workflow manifest shape

The remote matrix went red with 5 unique failures, identical on
linux-node22 and linux-node24, all in tests/gen-section-manifest.test.cjs.
Re-keying the artifact to {workflows:{...}} left this suite asserting the
old flat {sections:[...]} shape; nothing else in the tree still does.

- three tests read manifest.sections.length, now undefined; retargeted at
  workflows.<name> with their original intent preserved (a fenced or
  loop-host marker still asserts NO section is produced, not merely a
  changed count)
- the stale-manifest test wrote its fixture in the OLD shape, so it tripped
  shape validation and stopped exercising staleness at all. Its fixture is
  now valid-but-mismatched so FAIL_STALE is genuinely reached again.
- added the coverage that exposed: a pre-6.1 flat artifact must report
  FAIL_MANIFEST_MALFORMED_SHAPE. That is the real upgrade path for an
  installed tree and nothing covered it.

Refs #2992

* chore(#2992): backfill changeset pr number to 3013

---------

Co-authored-by: sim <sim@local>
2026-08-02 22:36:45 -04:00
Tom Boucher
628648d63a chore(#2931): cap emitted per-runtime bytes and single-source windsurf (#2984)
* fix(#2931): preserve protected regions and cap emitted per-runtime bytes

Route every runtime brand swap through applyClaudeCodeBrandSwap so
"Claude Code" survives verbatim inside <runtime_compatibility> regions
(#2284b). The fix existed only in bin/install.js's local copies; the
src/*.cts exports still used a naive replace, so binding install.js to
the single source -- as this phase does for the Windsurf family --
would have silently regressed those runtimes. A table-driven parity
guard now covers all nine brand-swapping converters.

De-duplicate the Windsurf converter family: delete the six local copies
in bin/install.js and bind the four exported ones by reference, guarded
by reference-identity assertions (the ADR-1508/#1675 pattern). The two
unexported helpers and an unused tool table go with them.

Replace the Windsurf 12,000-byte throw with description truncation,
matching the bound its sibling skill converter already applied. The
throw could only fire on an ~11.7 KB frontmatter description: the
largest emitted workflow is 311 bytes. Truncation makes the cap
unreachable by construction and leaves 12,000 in exactly one place,
eliminating the dual-surface duplication rather than testing for it.

Add the emitted-byte cap gate: buildEmittedSizes captures LF- and
<HOME>-normalized bytes from the walk buildParityManifest already
performs, and evaluateEmittedCaps asserts them against a per-runtime
cap table with dead-rule detection. buildParityManifest's return shape
is deliberately unchanged -- diffEmitted compares its values with
===, so making them objects would report all 8,529 emitted paths as
moved. A regression test pins the values as strings.

Add a deterministic trim-safety gate over composeWithinBudget's
omitted/shrunk/floored/isolatePrefix metadata, with an anti-vacuity
rule, replacing the model-graded eval gate the issue described.

* docs(#2931): correct ADR-1671 windsurf premise and trim-safety contract

* fix(#2931): bound the windsurf command name and single-source the brand swap

Review findings from the orthogonal passes, all fixed inline.

The claim that removing the 12,000-byte throw left total emission
"bounded by construction" was false. The #1615 regex constrains the
character class but not the length, and commandName is interpolated
three times into the emitted workflow: a 20,000-character name emitted
60,162 bytes silently. Add WINDSURF_COMMAND_NAME_MAX=128 as a separate,
clearly-labelled size control that THROWS -- commandName is the @-ref
path target, so truncating it would point the workflow at a file that
does not exist (DEFECT.WORKFLOW-DELEGATION-TARGET-NOT-INSTALLED). The
#1615 security regex is untouched and still runs first. 128 is generous:
the longest shipped name is gsd-plan-review-convergence at 27.

Harmonize convertClaudeCommandToWindsurfSkill onto the code-point-safe
truncation helper. It still used a UTF-16 slice(0,177) -- the exact
surrogate-splitting bug the helper was written to avoid, in the very
sibling the helper's comment cites as its model. Bounds are unchanged,
so output is byte-identical for every shipped command (descriptions max
out at 99 chars).

Export applyClaudeCodeBrandSwap and bind it in bin/install.js, deleting
the local copy. Adding it to the .cts left two unlinked implementations
of identical logic -- the drift class this change exists to remove.
Verified byte-identical across eight fixtures and five sequential calls
before merging, and guarded by a reference-identity assertion.

Convert three try/finally test bodies to t.after (CONTRIBUTING.md:344),
add fast-check property coverage for the trim-safety contract, and use
fc.pre instead of a bare return in a property callback.

* test(#2931): fix three test-authoring bugs the remote matrix caught

The remote runner returned 8 unique failures on 6f15cdeb8. All three
causes were in the test files, not the modules under test -- local
harnesses exercise the modules directly, so nothing executed the test
bodies until the matrix did.

`{ __proto__: [...] }` in an object literal sets the prototype instead
of an own key, so the JSON round-trip erased it and the cap table never
saw a reserved runtime key. The production rejection was already
correct; the test could not reach it. Use a computed key.

Two cap fixtures tripped orthogonal error paths rather than the paths
they name: one declared windsurf in the cap table but omitted it from
sizes (UNKNOWN_RUNTIME), the other left the sole windsurf pattern
matching nothing (a genuine dead rule). Both now include a compliant
artifact so the intended branch is what is asserted. The dead-rule and
unknown-runtime contracts are deliberate and unchanged.

`const { root } = makeSyntheticConfig({ ... `${root}` })` referenced
`root` from inside its own initializer -- a temporal dead zone error.
makeSyntheticConfig now optionally takes a (root) => files factory.

Also raise the npm pack --dry-run bound 60s -> 120s in the shipped-
scripts packaging test. That failure is NOT from this branch: the file
is byte-identical to next, a fresh tsc measures 1.98s there vs 2.14s
here, and the run recorded 60,637ms against a 60,000ms bound -- a
timeout under 28,948-test parallel contention, not a slowdown. Fixed
rather than deferred because a bound that tight is fragile regardless
of which branch trips it.

* chore(#2931): backfill changeset pr number to 2984

---------

Co-authored-by: sim <sim@local>
2026-08-01 16:00:14 -04:00
Tom Boucher
640eaee16e chore(#2930): fragmentize execute-phase.md and prove per-runtime composed emission (#2972)
* feat(#2930): fragmentize plan-phase.md workflow into per-runtime-composed sections

Adds src/workflow-fragments.cts (in-file <!-- gsd:section --> marker
parser/composer, ADR-1671 epic #1671 Phase 3), wires it into
bin/install.js's copyWithPathReplacement emission path, and pilots the
marker grammar on gsd-core/workflows/plan-phase.md.

Bookkeeping ripple for the new src/*.cts module: .gitignore,
eslint.config.mjs, docs/INVENTORY.md + docs/INVENTORY-MANIFEST.json,
and a CONTEXT.md glossary entry. Amends ADR-1671 with open questions 1
and 2 resolutions and records the closed when= applicability grammar.
Adds docs/reference/workflow-fragments.md and an ARCHITECTURE.md
section documenting the marker authoring model.

* fix(#2930): put allow-test-rule issue ref on the same line as the marker

lint-allow-test-rule-refs.cjs requires the #NNN issue reference on the
same source line as `allow-test-rule:`; it was one line below and read
as an unreferenced novel exemption.

* docs(#2930): link the orphaned gate-predicates reference from the docs index

Found while adding the workflow-fragments reference doc: docs/reference/gate-predicates.md
shipped without an entry in docs/README.md, so it was unreachable from the docs index.
Fixed inline rather than deferred.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#2930): scope composition to workflows, add typed failure reasons

Review findings from two orthogonal passes:

- Scope composeWorkflow to gsd-core/workflows/ only. It previously ran on
  every .md the installer copied, so a future agent/command/reference doc
  documenting the marker syntax with an unfenced example would have been
  mis-parsed and silently stripped — a lossy drop the phase forbids.
- Add a frozen REASON enum; failures attach a typed .reason and tests assert
  on it instead of matching free-form message text (CONTRIBUTING.md:635-694).
- Derive the property generator's when= values from WHEN_VOCABULARY instead
  of duplicating them (DEFECT.GENERATIVE-FIX).
- Add adversarial parser fixtures: Unicode headings, NUL, U+FFFD, BOM,
  fence-within-fence, tilde and indented fences, lone-CR marker line.
- Document why --mvp is structurally unmarkable: its content is interleaved,
  not sectioned, so the whole-line grammar cannot reach it.

Also fixes two stale tests on this branch, each reproduced on the unmodified
tree before correction.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#2930): retarget the pilot from plan-phase to execute-phase

The full remote matrix went red on both Linux lanes. Root cause was ours:
tests/phase6-capstone-conformance.test.cjs holds a PRE_PHASE6 ceiling of
94519 bytes for plan-phase.md, asserting an ADR-857 Phase-6 completion
property. That is a third size gate beyond the tier caps and the
differential ratchet, and it left plan-phase.md just 36 bytes of headroom
rather than the 3821 computed from the XL cap. The 330 marker bytes
overran it by 294.

Raising the ceiling is not an option: it is a red line certifying another
ADR's completion. plan-phase.md is reverted to byte-identical origin/next
and the pilot moves to execute-phase.md, which has 728 bytes of headroom
under its own ceiling and lands at 93147 with 3 marker pairs.

The vocabulary narrows to the atoms actually used: always, flag:--wave,
state:gap-closure-phase, state:has-prior-phases.

Recorded in the ADR: every branch the epic names lives in plan-phase.md,
which cannot be fragmentized until caps move from source to emitted bytes.
That is direct evidence for the epic's premise and may reorder phases 3-4.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* chore(#2930): backfill changeset PR number (#2972)

* fix(#2930): make the emission install tests portable on Windows

The windows-latest lane went red on three tests in the new install suite;
Linux was green. Both causes were in the test harness, not the module.

Root normalization: the opencode converter always embeds the install root
forward-slashed, but the tests stripped it with the native-separator string
from mkdtemp. On Windows that never matched, so the root leaked through
unstripped — and because the real and stub install roots have different
prefix lengths, that length difference landed directly in the byte-delta
assertion (344 observed vs 275 expected). Normalize both text and root to
one separator form before stripping.

@-ref resolution: the helper stripped only the @~/ and @$HOME/ forms, so a
Windows absolute ref (@C:/Users/...) fell through and was joined onto the
root, producing ...\@C:\Users\... Strip the @ first, then detect
absoluteness from the token's own shape (POSIX, drive-letter, or UNC) with
no platform branching, so every OS takes the same path.

Neither assertion was weakened; the exact-equality byte check is the point
of the test and still holds.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(#2930): document every REASON member and guard the doc/enum parity

Code review found the reference doc's 'Fails closed' list covering 10 of the
11 frozen REASON members — MALFORMED_ATTRIBUTES (parseAttrs rejects malformed
key="value" syntax) had no bullet, and it is distinct from
UNRECOGNIZED_ATTRIBUTE, which is valid syntax with an unknown key.

Two parallel surfaces sharing one constant with nothing asserting they agree is
the DEFECT.GENERATIVE-FIX class, so the same commit adds the parity assertion:
the test derives the enum side from the built module and the doc side by parsing
the reference page, keyed on the reason IDENTIFIER rather than prose so a
reworded bullet does not break it, and reports set differences in both
directions by name.

Proven non-vacuous: removing the MALFORMED_ATTRIBUTES bullet turns the suite
red naming that exact member; restoring it returns 44/44.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-01 12:12:20 -04:00
Tom Boucher
9ac0dfad58 chore(#2929): generalize prompt-budget into the shared context-composer seam (#2958)
* test(#2929): capture prompt-budget parity corpus pre-refactor

Phase 2 of epic #1671 generalizes prompt-budget's trim ladder into a shared
context-composer seam. Its success condition is that review-prompt output does
not change, and the only authority on "did not change" is the behavior that
shipped before the refactor. Capture that behavior now, while it is still the
live implementation.

47 characterization cases, every `expected` value computed by executing the
current implementation rather than hand-authored — the independence
CONTRIBUTING.md "Fixture provenance (#2371)" asks for.

A corpus is only worth what it can detect, so this one was validated by
mutation rather than assumed. Five deliberate defects were injected and each
must be caught by at least one case:

  - the note reserve deducted unconditionally instead of only under pressure
  - the pressure test relaxed from `>` to `>=`
  - a no-op head-shrink still setting the shrunk flag
  - the per-plan floor dropped from the proportional share
  - drop order reversed

Two of those exposed real holes in the first cut of this corpus, and the cases
that close them exist because of it:

  - `>=` was caught by NOTHING. At exact cap the only trimmable fragment was a
    floored plan group, and the 1024-char floor absorbed the entire trim, so the
    mutation was byte-invisible. A3b/A3c put a droppable at exactly the cap,
    which makes the strict inequality observable as context kept vs omitted.

  - No case reached proportional-truncate at all — B6 and B7 both hard-failed
    the min-set pre-check first, leaving planTruncationPct at 0 across every
    case and the floor semantics entirely unexercised. Rebudgeted to 700 and
    1100 so the min-set fits and the truncate step is actually reached; they now
    record 40.20% and 48.80%.

The A4/A10 families sweep the pressure boundary from both sides, which is where
this function has regressed before: CONTEXT.md's
LEARNING.prompt-budget.boundary-gap records PR #3708 shipping two regressions
that only fired when the baseline sat inside the NOTE_RESERVE_TOKENS band,
because the suite paired a trivially-fitting budget with a trivially-overflowing
one and never sampled between them. A4 pins that nothing is trimmed from the cap
down to 81 tokens under it; A10 pins that pressure fires at +1. Together with
A3b/A3c they satisfy row (d) of RULESET.TESTS.boundary-coverage.fixtures.

Two facts the corpus establishes that the design notes had wrong:

  - "" and null sections are NOT distinguished. applyBudget uses truthy checks
    throughout, so an empty-string section is treated as absent: not rendered,
    not dropped, never recorded in `omitted`. B13b pins this while the ladder is
    actively trimming, where only the non-empty `research` is dropped.

  - Sizing matters. B12/B13 were first written at a budget where both hard-failed
    the min-set check and returned "", so comparing them compared two empty
    strings and proved nothing.

Committed as its own commit, ahead of the refactor, and regenerated against the
pre-refactor implementation, so the oracle is demonstrably independent of the
change it will adjudicate.

Refs #2929

* refactor(#2929): extract the context-composer seam from prompt-budget

Epic #1671 needs prompt-budget's budget-trimming logic for a second consumer —
per-runtime artifact emission — but it is walled inside the cross-AI review
pipeline. Lift it into a shared seam so later phases can call it, without
changing what the review pipeline emits.

ADR-1671 specifies the composer as "priority + binary-search cutoff to a
per-runtime budget". Read against the code it generalizes, that contract cannot
express the thing being generalized. applyBudget is not a cutoff: it is a fixed
five-step ladder in which each section carries its own shrink strategy, and only
three of its eight sections are ever dropped. PROJECT.md is head-shrunk to N
lines; plans are proportionally tail-truncated with a per-plan 1024-byte floor;
instructions and roadmap are never touched at all. A cutoff composer sorts by
priority and discards the tail — it has no way to say "shrink this one",
"truncate that one but never below 1 KB each", or "these three are the only
droppables, in this order". Building to the literal contract and routing
prompt-budget through it would have silently changed review-prompt output, which
is the one outcome this phase forbids.

So shrink strategies are the core abstraction here, and cutoff becomes one
strategy among them — the right one for per-runtime emission in Phases 3-4, not
for this ladder. That is an elaboration of the ADR's intent, not a departure
from it, and ADR-1671 is updated to say so.

Three decisions worth stating:

  - The composer DECIDES; the caller RENDERS. composeWithinBudget returns a plan
    of surviving fragments and never a string. assemblePrompt's rendering is
    prompt-shaped (`## Roadmap`, `### <file>`, the note in position two), and
    owning it in the composer would force emission to adopt prompt-shaped
    rendering. The split is what lets one seam serve both consumers.

  - The budget unit is INJECTED via `measure(text)`. prompt-budget passes its
    chars/4 estimator; emission will pass a byte counter, which ADR-1671 requires
    for emission caps. The existing code converts a token budget to a character
    budget with a hardcoded `* 4`; that assumption is now an explicit
    `charsPerUnit` inverse, which is precisely what a byte unit needs in order to
    reuse this.

  - The entry point is `composeWithinBudget`, not `applyBudget`. That name
    already exists twice — src/prompt-budget.cts and src/graphify.cts, the latter
    being an unrelated graph-edge budget. A third would make every symbol search
    in this repo ambiguous, and it already misresolves: preflight and impact
    queries for "applyBudget" return graphify's.

Behavior is unchanged and proven so: all 47 characterization cases reproduce
byte-identically, and the corpus is mutation-validated rather than merely green
(see the preceding commit). prompt-budget.cts drops from 436 to 343 lines and
from eighteen mutable accumulators to two, both inside a helper copied verbatim.

estimateTokens deliberately stays in prompt-budget and keeps its exact math:
src/phase-estimation.cts re-exports it as measureTokens, and CONTEXT.md pins
plan estimates and recorded actuals to that same scale, so moving or changing it
would silently break the calibration loop.

Refs #2929

* docs(#2929): document the context-composer seam and amend ADR-1671

Adds the INVENTORY row, the CONTEXT.md glossary entry (a PR gate for new
domain modules), and a mutation-matrix entry for the new module.

The ADR amendment is the substantive part. ADR-1671 specified the composer as
"priority + binary-search cutoff to a per-runtime budget". Implementing Phase 2
established that a cutoff alone cannot express the function the platform
generalizes, so the ADR now records shrink strategies as the core abstraction
with cutoff as one strategy among them, reserved for per-runtime emission in
Phases 3-4. Recording it in the ADR matters because Phases 3-6 are planned
against that contract and would otherwise be planned against a mechanism that
does not work.

The mutation-matrix entry is not bookkeeping. Stryker scores per module against
a named .cjs, so relocating the ladder out of prompt-budget.cjs would leave the
extracted code unmeasured while prompt-budget's own score floated free of the
logic it used to cover. context-composer gets its own entry at the same floor.

Refs #2929

* test(#2929): pin the effectiveBudget rounding mode in the parity corpus

An isolated correctness review found a real blind spot: mutating
`Math.floor` to `Math.round` in the effectiveBudget calculation failed ZERO of
the 47 corpus cases. Every (budget, safetyMarginPct) pair in the generator
happened to produce a whole number, so floor, round and ceil all agreed and the
rounding mode was entirely unpinned by a corpus whose whole job is to pin
observable behavior.

Three cases fix that by straddling the .5 boundary:

  A11  95 * 0.90  = 85.5   floor 85, round 86  -> the two disagree
  A12  97 * 0.90  = 87.3   floor and round agree; ceil (88) does not
  A13  93 * 0.85  = 79.05  same guard at a non-multiple-of-10 margin, so the
                           margin arithmetic is exercised and not just the budget

A11 alone catches the round mutation; all three catch ceil. Regenerated against
the pre-refactor implementation (`git show 9557f8552:src/prompt-budget.cts`), so
the expanded corpus keeps the independence property the original capture had.

The corpus is now mutation-validated against seven injected defects, every one
caught: unconditional note reserve, `>` relaxed to `>=`, no-op head-shrink
setting its flag, the truncate floor ignored, drop order reversed, and both
rounding-mode changes.

Refs #2929

* feat(#2929): flexReserve floors and the byte-stable isolate prefix

Two of issue #2929's "Done when" items were unimplemented rather than deferred,
and an isolated review flagged them alongside my own audit. Both are part of
ADR-1671's composer contract, so shipping the seam without them would have left
Phases 3-4 building against a contract that does not exist yet.

flexReserve is a per-fragment floor in measure units that every strategy must
respect, which is what makes it different from the pre-existing floorChars: that
one is a chars-denominated detail of proportional-truncate alone and is retained
unchanged. A floored fragment is never dropped, is never head-shrunk below its
floor, and raises its own proportional cap. A fragment already smaller than its
floor is untouchable outright. Metadata gains `floored`, listing the ids whose
floor actually prevented a trim — a guarantee no caller can observe is a
guarantee no test can hold you to.

isolate marks the byte-stable canonical prefix the ADR calls for: never trimmed,
never dropped, but still counted, because a prefix excluded from accounting
would silently under-count real context. Metadata gains `isolatePrefix` so a
caller can hash or assert on the exact bytes. Declaring an isolate fragment
after a non-isolate one throws: a prefix that is not at the front is not a
prefix, and accepting it would make the cross-runtime stability claim
meaningless.

Adds tests/context-composer.test.cjs for the exact new semantics and
tests/context-composer.property.test.cjs for the five invariants, including the
budget-monotonicity property the issue names explicitly. Both are registered in
the mutation matrix, since coverage does not migrate with relocated code.

prompt-budget uses neither feature, and its output is unchanged: all 50 corpus
cases still reproduce byte-identically.

Refs #2929

* chore(#2929): allowlist the prompt-budget parity suite

The parity corpus needs its own test file and that makes prompt-budget a
three-file module against a limit of two. The lint offers consolidation or an
allowlist entry with justification; the entry is the right call here.

Consolidation would mean folding the characterization suite into
prompt-budget.test.cjs, which is the one thing that should not happen to it. The
parity suite is a distinct concern with a distinct lifecycle: it is generated
rather than hand-written, it is named by scripts/mutation-matrix.cjs as its own
scoring target, and its failure means something categorically different from a
unit-test failure — not "this behavior is wrong" but "observable output moved".
Burying it inside a general unit file would obscure exactly that signal.

The allowlist is an identity ratchet, so this entry pins today's three exact
filenames: adding a fourth still fails, and dropping back to two requires
removing the entry.

Refs #2929

* fix(#2929): register the new module with two gates it was missing

The remote matrix caught three defects that no local check could, because the
local runner is blocked in this repo and these suites had therefore never
executed. Eight failures, identical on node22 and node24, so nothing
environment-shaped.

Two are the new-module ripple. A net-new src/*.cts lands in six places and this
change had reached four of them — .gitignore, INVENTORY, the manifest, and the
CONTEXT.md glossary — while missing the ESLint ignore list (tsc OUTPUTS must not
be linted; repo-invariants asserts linted-xor-ignored) and the mutation ratchet
baseline (a deliberate review-visible mirror of the matrix floors, which every
COVERED module must carry). Both are now registered, the ratchet at the same
floor of 66 the matrix declares.

The third was a test asserting an outcome it had made impossible. It set
budget:1 alongside a 400-char required fragment, so the group budget came out at
-99 and the proportional-truncate step was skipped entirely — the deliberate
"non-positive group budget is skipped, never clamped" rule inherited from the
original ladder. Nothing was trimmed, and the test then asserted a truncation.
Rebudgeted so the step actually runs, with the arithmetic written out in a
comment so the next reader does not have to re-derive why 120 rather than 80.

Fixing that surfaced a genuine bug in the composer. `floored` is documented as
recording fragments whose flexReserve prevented a trim that would otherwise have
happened, but the push sat in the else-branch of "content did not change", so it
only fired when nothing was trimmed at all. A fragment truncated to a
reserve-raised cap has also had a trim prevented — 40 characters' worth in the
test above — and was silently absent from the field that exists to make the
guarantee observable. The condition was already right; it was in the wrong
branch. Now recorded on both paths: a drop prevented outright, and a truncation
capped higher than the share alone would have allowed.

Parity is unaffected — prompt-budget never sets flexReserve, so the branch is
unreachable from every corpus path, and all 50 cases still match.

Refs #2929

* chore(#2929): backfill changeset PR number (#2958)

* chore(#2929): correct the corpus case count in the changeset fragment

---------

Co-authored-by: sim <sim@local>
2026-07-31 23:03:13 -04:00
Tom Boucher
5a0a9f0972 fix(#2944): remove the catastrophic-backtracking regex from the ADR-1671 example (#2950)
* fix(#2944): remove the catastrophic-backtracking regex from the example

The non-shipping Option-E reference example carried its own copy of the
predicate-id regex, which nested a dot-containing character class inside a
dot-prefixed repeat. A run of N consecutive dots therefore had exponentially
many partitions. Measured on next before this change: 30 dots 54ms, 35 66ms,
40 807ms — so roughly 55-60 dots hangs for hours.

Not exploitable where it sits: the example is outside tsconfig.build.json,
outside the npm package files list, outside the installer and outside tests,
so no build step or CI job parses anything with it. Fixed because the entire
point of a reference example is that people copy it forward, and ADR-1671
presents this one as the pattern for the platform.

Ports the linear per-segment validation that #2928 gave the production module,
so the two copies agree: both parse the real CONTEXT.md to 415 predicates
across 20 classes with 0 duplicates. Doubled-dot ids are now rejected here
too, matching production, and the grammar comment records it.

Also refreshes the example's committed index, which #2928 made stale when it
removed the duplicate predicate from CONTEXT.md.

Closes #2944

* test(#2944): guard predicate-index sync and example/production parity

Two regression tests for the two defects in this PR.

Index sync: asserts the committed docs/CONTEXT-INDEX.json equals a fresh parse
of CONTEXT.md, naming any diverging predicate ids. The merge race that reddened
next was invisible to both PRs involved and only surfaced on the next PR to run
lint:ci; this puts the same check inside the suite, which runs on every PR, and
a mutation test proves the assertion is not vacuous.

Example/production parity: asserts both copies of the parser report the same
count, classes and duplicates for the real CONTEXT.md, and agree verdict-for-
verdict over a table of id shapes. The divergence WAS the bug — production went
linear-time while the example kept the backtracking regex, with nothing
asserting they agreed. Also pins the example rejecting a 60-dot id, with the
clean rejection as the binding assertion and wall-clock only as a smoke check.

Notes a real tension rather than hiding it: ADR-1671 says the example sits
outside tests/, and this imports it. The ADR's intent is that the example is
not compiled, packaged or installed — not that it may silently rot. A parity
guard does not ship it. The file states this so a reviewer can object.

* fix(#2944): address both isolated review passes

Two independent reviewers (correctness and security axes, neither the author).
Security found nothing — it measured linearity to 100k chars across dots,
hyphens, underscores and mixed classes, and showed prototype pollution is
structurally unreachable because the first-segment pattern forbids
lowercase and underscore-leading ids. The correctness pass found three
blockers, all real.

Blocker: the parity test violated ADR-1671 verbatim. The ADR lists FOUR
exclusions for the reference example, the fourth being the CI test suite, and
the test imported it from tests/ while its own justification comment cited only
three -- constructing a rationale around the exclusion it broke. Moved to
scripts/lint-example-parser-parity.cjs wired into lint:ci; a lint script is not
the test suite, so the exclusion stands. The test file keeps only the
docs/CONTEXT-INDEX.json sync check.

Blocker: the mutation test leaked its temp dir. Its callback took no `t`, so a
failing assertion skipped the bare cleanup call. Now registered via t.after(),
matching the convention adr-index-gate.test.cjs documents.

Blocker: the example's own committed index carries the identical merge-race
staleness this PR fixes for the production one, and nothing guarded it.
Deliberately NOT fixed by wiring the example's --check into CI: that artifact
bakes line numbers, so it re-drifts on any unrelated CONTEXT.md line shift --
exactly ADR-1671 open question 4 -- and would make CI routinely red. The new
lint asserts the line-INDEPENDENT facts instead: count, class map, duplicate
set, and every (id, value) pair. Proven non-vacuous both ways: mutating a value
fails and names the id, mutating only a line number passes.

Major: a real divergence the parity claim would have missed. Production rejects
values containing an embedded CR, LF, U+2028 or U+2029; the example did not, so
a value with an embedded lone CR was rejected by one copy and accepted by the
other. Ported, and now covered by the parity table.

Also, found while verifying rather than reported: malformed diagnostics covered
only empty values. A doubled-dot id, a space in an id, and a lowercase-leading
id were all dropped silently. That contradicts the module's own intent -- a
typo should be diagnosable, and a space in an id is a likely one -- and
predicates are contractually cited, so a silently vanished predicate is the
failure mode that matters. Each rejection class now carries a named reason in
both copies, while ordinary inline code still yields none.

Trues up counts my own change staled: the example README and ADR-1671's
prototype figures said 416 and 393/18 against a real 415/20/0.

Closes #2944

* chore(#2944): backfill changeset PR number 2950

---------

Co-authored-by: sim <sim@local>
2026-07-31 15:44:19 -04:00
Tom Boucher
05b170e448 chore(#2928): productionize the CONTEXT.md predicate fact-store and gate it in CI (#2938)
* feat(#2928): port CONTEXT.md predicate fact-store into the src seam

Productionizes the ADR-1671 Option-E reference example as a real module:
src/context-predicates.cts (parser + selector + index builder) compiled to
gsd-core/bin/lib/, plus scripts/gen-context-index.cjs following the repo's
--check/--write drift-guard idiom and wired into lint:generated-sync.

Parser behavior is deliberately prototype-equivalent in this commit so the
next commit's regression matrix binds to the real defects rather than to a
missing module.

Two locked design deviations from the prototype:
- duplicates carry a count, not line numbers
- the committed index carries no line field at all, resolving ADR-1671 open
  question 4: an artifact without line numbers cannot drift on a line shift,
  so promoting --check to a CI gate does not make it routinely red

Also reconciles the one remaining duplicate predicate ID
(RULESET.WORKFLOW_MARKDOWN.FENCES was declared twice; the non-MD040 wording
is removed) so the gate can land fail-closed on duplicates.

Refs #1671

* test(#2928): failing-first matrix for the predicate fact-store

Adds the regression matrix from the phase test plan: parser declaration
forms, fence and comment regions, ID/value grammar boundaries at
limit-1/limit/limit+1, CRLF fidelity, duplicate detection, the drift-guard
CLI, the selector query surface, and four document-shaped fast-check
properties.

Seven rows are RED for behavioral reasons against the ported parser:
indented-bare, star-list, plus-list and numbered-list declaration forms are
dropped; a tilde fence and a four-backtick fence containing a shorter fence
are not skipped; and a multi-line HTML comment is parsed as live. Eleven
selector rows are RED because the query surface is not wired yet.

Negative fixtures come from real repo documents that predate the grammar
(CONTEXT.md, CONTRIBUTING.md's fenced env-assignment examples) per the
fixture-provenance rule, and the property generators are document-shaped
rather than seeded from our own serializer.

Refs #1671

* fix(#2928): consume the shared fence scanner, relocate the index, wire the selector

Drives the failing-first matrix green.

Parser: replaces the ported naive triple-backtick toggle with the shared
markdown-sectionizer fence engine. scanFencedBlocks and FencedBlockRecord
gain an export keyword — the only change to that module, which has 71
upstream dependents — because it already returns line-indexed spans, which
is exactly what a line-reporting parser needs. It also already documents
itself as the second copy of the fence state machine pending consolidation;
adding a third copy here would have been the generative-fix divergence this
repo warns about. A parity suite now pins predicate fence-skipping against
that scanner across eight fence shapes. HTML-comment skipping stays local
because the sectionizer has no comment scanner. Declaration forms widen to
indented-bare, star, plus and numbered list items.

Index location: docs/CONTEXT-INDEX.json, not a module under bin/lib. The
remote matrix run caught the original choice — a committed .cjs there ships
~120KB of CONTEXT.md prose into a runtime module, and two content guards
fired truthfully on it (a leaked .claude install path, and four hardcoded
package-name literals). Neither guard was allowlisted; the artifact moved
instead, mirroring docs/INVENTORY-MANIFEST.json. Nothing at runtime needs to
require it — it is a drift-detection artifact, so the selector parses
CONTEXT.md live and is always current.

Generator: adds a frozen REASON enum and --check --json so the gate's
outcome is asserted structurally instead of by matching prose, and
--context-path/--index-path so tests drive the real CLI against a temp tree
with no filesystem monkeypatching.

Selector: gsd_run query context-predicates with --class/--prefix/--contains,
structured output carrying a matched count, own-property guards, and no
project-root resolution. Registering it exposed that the query dispatch
table and the usage string had drifted: a new parity test found 20 routed
commands missing from the usage list, all added here rather than deferred.

Refs #1671

* test(#2928): lock the newly-public scanFencedBlocks contract

Exporting scanFencedBlocks made it public API for the first time, so it
needs its own contract test independent of the consumer that motivated the
export. Memtrace's co-change analysis flagged the gap: this suite changes
together with markdown-sectionizer.cts 8 times in 90 days and was absent
from the diff.

Covers the documented rules: 0-based indices, -1 for an unterminated fence,
the same-char/>=length/no-trailing-text closer rule, a shorter fence inside
a longer one staying content, CommonMark 4.5 backtick-in-info-string, and
<=3-space indent tolerance.

Refs #1671

* fix(#2928): address both isolated review passes

Two independent reviewers (correctness axis and security axis, neither the
author) found seven findings. All are fixed here with regression tests; none
deferred.

BLOCKER — comment-blind fence scanning caused silent, permanent predicate
loss. The HTML-comment scan and the fence scan ran as two independent passes,
and the fence scanner is comment-blind, so a fence delimiter inside an HTML
comment with no later close read as an unterminated fence and skipped every
remaining line to EOF. Worse, the drift-guard could not catch it: it diffs
against a baseline produced by the same corrupted parse. The two constructs
now interleave in a single pass so each suppresses the other's boundary
detection while active, covered in both directions. The parity suite still
binds this scanner to markdown-sectionizer's for comment-free documents, so
the two cannot diverge unnoticed.

BLOCKER — the selector was not consumed anywhere, leaving the phase's
acceptance criterion unmet. Now wired into the pre-work predicate-citation
step in contributor-standards, which is the repo's actual brief-assembly
path; no code-level brief assembler exists to wire into.

MAJOR — ReDoS with an unauthenticated CI-hang exploit. The predicate-id
regex nested a dot-containing character class inside a dot-prefixed repeat,
so N consecutive dots had exponentially many partitions: 40 dots took 565ms
and growth was exponential. CI runs this parser over a pull request's own
CONTEXT.md, so any contributor could have hung a shared runner with one
line. Replaced with linear per-segment validation. Doubled-dot ids are now
rejected; the real document contains none.

MAJOR — the duplicate-id gate had only ever been proven on synthetic
fixtures. A test now re-inserts the exact line this branch removed and
asserts the real generator names it.

MAJOR — --check together with --write silently let write win, turning the
gate into a writer; a missing path value resolved to the cwd and leaked an
EISDIR stack trace. Both are now clean usage errors.

MINOR — the hoisted skip-list was exported as a live mutable Set; replaced
with a read-only predicate. MINOR — flag-shaped selector values were
unmatchable; the inline --flag=value form now provides the escape hatch.

Refs #1671

* chore(#2928): backfill changeset PR number 2938

---------

Co-authored-by: sim <sim@local>
2026-07-31 13:17:01 -04:00
Tom Boucher
81eeb8a53a docs(#2926): refresh ADR-1671 with findings re-verified on next (#2936)
Re-measured the Option-E prototype's reported figures against CONTEXT.md on
next (2026-07-31) and recorded the delta rather than overwriting the June
numbers:

- index counts 393/18 (2026-06-24) -> 416/20 today; CONTEXT.md gained the
  PROBE (11) and PROHIB (10) classes
- of the 3 duplicate predicate IDs, only RULESET.WORKFLOW_MARKDOWN.FENCES
  remains; the two RULESET.GEMINI.* went with the Gemini runtime removal
- gen-context-index.cjs --check exits 1 on next, so Phase 0's "--check green
  in CI" criterion is unmet (invisible to CI: the example sits outside tests/)

Adds Open question 4 (index keyed on baked line numbers re-drifts on any
CONTEXT.md line shift, which matters once Phase 1 promotes --check to a CI
gate), and records the reviewer-proposed eval-gate question as resolved by
the PROBE.*/PROHIB.* predicate classes (ADR-550 D4/D7, ADR-1606).

Also names both surfaces of the Windsurf 12 KB throw in Decision 2, since it
is duplicated byte-identically in bin/install.js and
src/runtime-artifact-conversion.cts.

Docs-only. No code, no runtime-loaded text, no behavior change.

Co-authored-by: sim <sim@local>
2026-07-31 10:52:52 -04:00
Tom Boucher
cc2e33b098 docs(#1672): add ADR-1671 dynamic context management platform + reference example (#1674)
Phase 0 of the Dynamic Context Management epic (#1671): the ADR (documentation) plus a non-shipping reference example under examples/dynamic-context-management/ — the Option-E predicate fact-store parser/selector, a self-contained --check/--write/--select index generator, a sample index, and a runnable demo.

The example is intentionally excluded from the build (src/->bin/lib/), the npm package files[], the installer, and the CI test suite (tests/) — nothing here is compiled into or installed with GSD. Production implementation lands in a later phase.

Resolves #1672

Refs #1671

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-24 19:48:51 -04:00