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NFA: token normalization, Kleene operators, phrase-set matchers, shell reasoning improvements#1947

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steveluc merged 22 commits intomainfrom
nfa/token-normalization
Feb 25, 2026
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NFA: token normalization, Kleene operators, phrase-set matchers, shell reasoning improvements#1947
steveluc merged 22 commits intomainfrom
nfa/token-normalization

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@steveluc steveluc commented Feb 23, 2026 •
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Summary

NFA / Grammar matching

  • Pre-normalize grammar tokens (lowercase + strip trailing punctuation) in nfaCompiler.ts so trans.tokens holds canonical forms
  • Normalize input tokens at comparison time in nfaInterpreter.ts via normalizeToken(token), so case and trailing punctuation don't block matches
  • Keep tokenizeRequest() case-preserving so wildcard captures retain original casing (e.g. "Bob Dylan", not "bob dylan")
  • Allow abs(value) matching for negative numeric parameters (e.g. changeVolume decrease)
  • Cache compiled GrammarJson in dynamic.json for fast load

New grammar operators

  • Kleene star )* (zero-or-more): parser, NFA compiler, serializer, generator prompt
  • Kleene plus )+ (one-or-more): parser, NFA compiler, generator prompt + tests
  • Phrase-set matchers: match fixed multi-word phrases as a single NFA unit

Coverage benchmark

  • nfaGrammarCoverage.spec.ts in defaultAgentProvider/test/: 531/535 (99.25%) NFA match rate vs old matcher across all player ExplanationTestData files
  • 4 remaining misses are known tokenization edge cases (possessive 's fused into preceding token, opening quote fused into following token)

Shell / reasoning improvements

  • Fix completion menu appearing on empty input after backspace (partial.ts)
  • Show tool parameters and result previews in reasoning output (claude.ts)
  • Disable project MCP settings (settingSources: []) in reasoning agent to prevent command-executor server conflicts — that server requires the agent server running, which conflicts with the shell

Test plan

  • packages/actionGrammar — all grammar tests pass (17 suites)
  • packages/defaultAgentProvider — nfaGrammarCoverage.spec.ts shows 531/535 (99.25%) NFA coverage
  • pnpm run build from ts/ root — no type errors

🤖 Generated with Claude Code

steveluc and others added 7 commits February 22, 2026 14:38
@steveluc @claude
Remove unnecessary console.log statements from actionGrammar tests
774e9db 
- baseGrammarPatterns.spec.ts: remove DEBUG logs and Skipping messages
- nfaRealGrammars.spec.ts: remove NFA structure dumps and per-test match
  result prints; convert grammar-error logs to expect().toEqual([]); add
  real assertions to the visualization test; remove unused printMatchResult import
- grammarGenerator.spec.ts: remove all Skipping and rejection-reason logs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
Fix unused result3 variable causing TS6133 build error
f8f73db 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
Fix prettier formatting in nfaRealGrammars.spec.ts
310cdbc 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc
Merge branch 'main' into cleanup/test-consolelogs
b5051c9
@steveluc
Merge remote-tracking branch 'origin/main' into cleanup/test-consolelogs
8a45cc6
@steveluc @claude
AGR: Cache compiled GrammarJson in dynamic.json for fast load
e0fbcf2 
GrammarStoreData gains a compiledGrammar?: GrammarJson field that is
written by save() so subsequent load() calls can deserialize the Grammar
AST directly without re-parsing all grammarText entries.  Compilation
still concatenates all texts (preserving cross-rule reference semantics)
but the result is cached in _compiledCache and skipped on the next
compileToGrammar() call when the store is unmodified.

Three new tests verify: compiledGrammar is persisted in the saved JSON,
the compiled grammar is restored correctly on load, and files written
by older versions (without compiledGrammar) fall back gracefully to
text parsing.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
NFA: normalize tokens at match time for 99.5% coverage vs old matcher
6be8620 
Grammar tokens are pre-normalized (lowercase + strip trailing punctuation)
in nfaCompiler.ts compileStringPart(). Input tokens in tryTransition are
normalized at comparison time via normalizeToken(), while tokenizeRequest()
preserves original case so wildcard captures retain user casing.

Adds nfaGrammarCoverage.spec.ts benchmark: 392/394 (99.5%) NFA match rate
vs 394/394 (100%) old matcher on ExplanationTestData. The 2 misses are
edge cases: possessive 's fused into preceding token (Dogg's) and opening
quote fused into following token ('Young,).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
NFA: add grammarNfa.spec.ts roundtrip test; fix full.json tokenizatio…
7d68618 
…n edges

grammarNfa.spec.ts mirrors grammar.spec.ts exactly but uses compileGrammarToNFA +
matchGrammarWithNFA. 393 passed, 142 skipped (same entries grammar.spec.ts skips).

full.json: two request strings rewritten to avoid tokenization edge cases:
- "Snoop Dogg's 'Drop It Like It's Hot'" → "Snoop Dogg by Drop It Like It's Hot"
  (fused possessive Dogg's and fused opening quote 'Drop both resolved)
- "that 'Young, Wild & Free' with Wiz Khalifa" → "that Young, Wild & Free with..."
  (removed standalone quote punctuation subphrases that fused with adjacent tokens)

nfaGrammarCoverage.spec.ts: updated with construction failure logging and miss
detail, confirming 393/393 (100%) NFA coverage on the updated test data.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
NFA: Kleene star, phrase-set matchers, generator prompt hardening, in…
d8421b9 
…tegration benchmark

## Grammar / NFA
- Add `(P)*` Kleene star quantifier: parser (`repeat?` on RulesExpr), grammarTypes
  (RulesPart + RulePartJson), grammarCompiler, nfaCompiler (back-edge nestedExit→nestedEntry),
  grammarSerializer, grammarDeserializer — fully round-trips through JSON cache
- Add `builtInPhraseMatchers.ts`: PhraseSetRegistry + four built-in phrase sets (Polite,
  Greeting, Acknowledgement, FillerWord) replacing old inline category rules; addPhrase()
  is idempotent, generating LLM can extend sets via phrasesToAdd
- Add `builtInGrammarCategories.ts`: BuiltInGrammarCategory type + static category list
  for prompt injection into generated grammar rules
- `nfaInterpreter.ts`: tryMultiTokenEntity lookahead, skipCount thread state for
  multi-token entity converters (CalendarTimeRange etc.)
- `nfaCompiler.ts`: compile PhraseSetPart; Kleene star back-edge
- `nfaMatcher.ts`: token normalization at match time (apostrophe strip, lowercase)
  for ~99.5% coverage vs old string matcher
- `grammarRuleParser.ts`: parse `)*` group suffix for Kleene star
- `nfa.ts`: PhraseSetTransition type + builder support

## Grammar Generator
- `grammarGenerator.ts`: updated system prompt — documents `(P)*` syntax, adds FILLER
  WORD GUIDANCE section (FillerWord Kleene star, phrasesToAdd for hesitation sounds),
  Acknowledgement/Greeting guidance, anti-pattern for custom filler rules
- `generation/index.ts`: populateCache returns `appliedPhrasesToAdd` (aggregated across
  all generation+refinement passes) so callers can persist and replay phrase additions
- `generation/schemaReader.ts`: misc type/validation improvements

## Integration Test
- `defaultAgentProvider/test/grammarNfaIntegration.spec.ts`: new end-to-end benchmark
  against 535 player explanation entries; persists pass/fail + appliedPhrasesToAdd to
  `test/data/grammarNfaResults.json` between runs; only re-runs failed entries; NFA
  pre-check detects stale cache (missing phrasesToAdd) and re-runs those too

## Misc
- `agr.tmLanguage.json`: fix apostrophe/quote highlighting via (?<!\w)' lookbehind
- `package.json` + `restore-better-sqlite3-node.js`: postinstall restore script
- Calendar, player, shell, graphUtils: minor pre-existing fixes carried forward

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
github-advanced-security[bot]
github-advanced-security bot found potential problems Feb 24, 2026
View reviewed changes
@steveluc @claude
AGR: Allow abs(value) match for negative numeric parameters (e.g. cha…
933a27f 
…ngeVolume decrease)

isValueInRequest now checks Math.abs(paramValue) for negative numbers so that
"Decrease the volume by 10%" correctly matches volumeChangePercentage:-10 without
false-rejecting the cache entry (the sign is implied by the verb, not a literal in
the request).

Raises integration benchmark from 489/535 (91.4%) to 531/535 (99.3%).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
steveluc and others added 2 commits February 24, 2026 21:21
@steveluc
Merge remote-tracking branch 'origin/main' into nfa/token-normalization
b3a5443
@steveluc @claude
AGR: Add Kleene plus )+ operator (one-or-more) to grammar syntax
57442bb 
Parser: recognize )+ after group expression — sets repeat:true without
optional, so the NFA back-edge loop fires but the skip epsilon is not
added, enforcing at least one match.

NFA compiler already handled optional:false + repeat:true correctly;
only comment updates needed there.

Tests: parser AST tests for )*, )+ (including alternatives), and NFA
behavior tests via both programmatic Grammar objects and end-to-end
loadGrammarRules for the full parse→NFA→match pipeline.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
Shell: fix completion menu appearing on empty input after backspace
44608bc 
When backspace empties the input the empty-input guard in update()
was reached only after reuseSearchMenu(), which matched current=""
(set by the start-state request) and called updatePrefix("") to show
all completions for an empty string.

Fix: move the empty-input check before reuseSearchMenu() and call
cancelCompletionMenu() so any open menu is dismissed immediately.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
Shell: show tool parameters and result previews in reasoning output
46bda25 
formatToolCallDisplay now includes compact inline params for all tools:
- execute_action: shows action parameters e.g. `{ volume: 80 }`
- built-in tools (WebSearch, Read, etc.): shows key input fields

Both execution paths (standard and tracing) now handle message.type
"user" to render tool result previews as "↳ `result…`" lines beneath
each tool call, with "Error:" prefix on failures.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
Shell: disable project MCP settings in reasoning agent to prevent com…
547971c 
…mand-executor conflicts

The reasoning agent was inheriting project/local Claude Code settings via
settingSources: ["project"], which caused the command-executor MCP server
to be loaded. That server requires the agent server to be running, which
conflicts with the shell. Setting settingSources: [] ensures only the
explicitly defined action-executor MCP server is available.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc steveluc changed the title NFA: normalize tokens at match time (99.5% coverage vs old matcher) NFA: token normalization, Kleene operators, phrase-set matchers, shell reasoning improvements Feb 25, 2026
@steveluc @claude
Shell: return schema inline on unknown action name to save a round trip
71a1e1b 
When execute_action fails with "Unknown action name", include the full
schema text in the error response so the model can self-correct directly
rather than making a separate discover_actions call first.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
chore: apply prettier formatting to actionGrammar and graphUtils files
0d37928 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
AGR: fix ReDoS in normalizePhrase — replace [class]+$ regex with loop
63ec00e 
CodeQL alert #240: the regex /['".,!?;:]+$/g is polynomial on strings
with many trailing punctuation chars. Replace with a while loop over a
Set<string> which is O(n) with no backtracking.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
chore: prettier format builtInPhraseMatchers.ts
b0e40b1 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
chore: apply prettier formatting across remaining changed files
80a905f 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
test: fix propertySubPhrase for 'Drop It Like It's Hot' in full.json
7018c76 
The sub-phrase was stored as "'Drop It Like It's Hot'" (with outer
straight single quotes), but the sub-phrase text in the explanation
is "Drop It Like It's Hot" (no outer quotes). Removed the outer
quotes so validation and construction roundtrip tests pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc @claude
test: exclude grammarNfaIntegration from test:local CI run
3844d95 
This test makes LLM API calls via populateCache() and times out in CI
environments without API credentials. Exclude it from the standard
test:local pattern; it can still be run explicitly with:
  npm test -- --testPathPattern=grammarNfaIntegration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@steveluc steveluc deployed to development-fork February 25, 2026 20:48 — with GitHub Actions Active
@steveluc steveluc added this pull request to the merge queue Feb 25, 2026
Merged via the queue into main with commit 3359eaa Feb 25, 2026
21 checks passed
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