Kjell Tore Guttormsen
03949c6c98
Extends the DIS scanner and its shared permission-rules lib with two
documented Claude Code permission footguns. Verified verbatim against
code.claude.com/docs/en/permissions (fetched 2026-06-19).
- lib/permission-rules.mjs: new isIneffectiveAllowGlob(entry) — unanchored
tool-name globs in permissions.allow (`*`, `B*`, `mcp__*`) that CC silently
skips ("does not auto-approve anything"); valid only as a glob-free
`mcp__<server>__*`. Shared with CNF.
- lib/permission-rules.mjs: dominates() now treats the `Tool(*)` deny-all glob
as equivalent to a bare deny (covers a bare allow) — CC: "Bash(*) is
equivalent to Bash ... both forms remove the tool from Claude's context".
- DIS: new finding "Ineffective allow wildcard — Claude Code ignores this rule"
(low, permissions-hygiene, CA-DIS-NNN); the existing dead-allow finding now
also catches a bare allow killed by a Tool(*) deny.
- 9 new tests (5 lib, 4 DIS) + 2 fixtures (force-added past .gitignore .claude/).
Suite 903 -> 912. Snapshot unchanged, contamination grep clean. README/CLAUDE/
scanner-internals document the broadened DIS mandate; test badge synced.
self-audit: PASS, configGrade A 96, pluginGrade A 100, readme gate passed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ter3E2JSi1Khgmuf2kady8
77 lines
7.1 KiB
Markdown
77 lines
7.1 KiB
Markdown
# Config-Audit — Scanner internals
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Detailed scanner inventory, lib modules, action engines, knowledge base. Imported from `CLAUDE.md` via pointer.
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## Deterministic Scanners
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Node.js scanners (zero external dependencies), run via `node scanners/scan-orchestrator.mjs <path>`.
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Posture CLI: `node scanners/posture.mjs <path> [--json] [--global] [--full-machine] [--output-file path]`.
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Scanner CLI: `node scanners/scan-orchestrator.mjs <path> [--global] [--full-machine] [--no-suppress]`.
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| Scanner | Prefix | Detects |
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|---------|--------|---------|
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| `claude-md-linter.mjs` | CML | Structure, length, sections, @imports, duplicates, TODOs |
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| `settings-validator.mjs` | SET | Schema, unknown/deprecated keys, type mismatches, permissions |
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| `hook-validator.mjs` | HKV | Format, script existence, event validity, timeouts |
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| `rules-validator.mjs` | RUL | Glob matching, orphan rules, deprecated fields, unscoped rules |
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| `mcp-config-validator.mjs` | MCP | Server types, env vars, unknown fields |
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| `import-resolver.mjs` | IMP | Broken @imports, circular refs, deep chains, tilde paths |
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| `conflict-detector.mjs` | CNF | Settings conflicts, permission contradictions, hook duplicates |
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| `feature-gap-scanner.mjs` | GAP | 25 feature checks across 4 tiers — shown as opportunities, not grades |
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| `token-hotspots.mjs` | TOK | Cache-breaking volatile content, redundant tool permissions, deep import chains, oversized cascade, bloated SKILL.md descriptions, MCP tool-schema budget (prompt-cache patterns) |
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| `cache-prefix-scanner.mjs` | CPS | Volatile content in lines 31–150 of CLAUDE.md cascade (beyond Pattern A's top-30 window) |
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| `disabled-in-schema-scanner.mjs` | DIS | Dead/ineffective permission entries (low). (1) Tools in BOTH `permissions.deny` AND `permissions.allow` — deny wins; dominance is param-aware and treats the `Tool(*)` deny-all glob as equivalent to a bare deny (covers a bare allow). (2) Unanchored allow wildcards (`*`, `B*`, `mcp__*`) that Claude Code silently skips — CC accepts allow globs only after a literal glob-free `mcp__<server>__` prefix. Predicates shared with CNF live in `lib/permission-rules.mjs` |
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| `collision-scanner.mjs` | COL | Cross-plugin skill name collisions (low); user-vs-plugin overlaps (medium); `details.namespaces` payload |
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| `skill-listing-scanner.mjs` | SKL | (1) `CA-SKL-001` (medium): active skill descriptions over the verified 1,536-char listing cap (CC 2.1.105) → silently truncated in the model's skill listing. (2) `CA-SKL-002` (low): sum of active descriptions (each counted up to the cap) over the listing budget (~2% of context, CC 2.1.32), anchored on a conservative 200k window with a calibration note that the budget scales 5× on 1M-context models — leads with the measured sum, an estimate not telemetry. HOME-scoped (all user + plugin skills). Remediation surfaces `disableBundledSkills` / `skillOverrides` / trim. Distinct lens from TOK pattern F (project-local 500-char bloat heuristic) |
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## Scanner Lib (`scanners/lib/`)
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| Module | Purpose |
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|--------|---------|
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| `severity.mjs` | Severity constants, risk scoring, verdict logic, `WEIGHTS` named export (v5 F3) |
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| `output.mjs` | Finding objects (CA-XXX-NNN format), scanner results, envelope, optional `details` payload (v5 N6) |
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| `file-discovery.mjs` | Config file discovery: single-path, multi-path (`discoverConfigFilesMulti`), full-machine (`discoverFullMachinePaths`) |
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| `yaml-parser.mjs` | Frontmatter parsing, JSON parsing, @import/section extraction |
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| `string-utils.mjs` | Line counting, truncation, similarity, key extraction |
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| `scoring.mjs` | Severity-weighted `scoreByArea` (v5 F3), health scorecard, dedup-by-area (v5 N3), `scoringVersion: 'v5'` |
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| `backup.mjs` | Backup creation, manifest parsing, checksum verification |
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| `diff-engine.mjs` | Drift diffing: diffEnvelopes(), formatDiffReport() |
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| `baseline.mjs` | Baseline save/load/list/delete for drift detection |
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| `report-generator.mjs` | Unified markdown reports: posture, drift, plugin health |
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| `suppression.mjs` | .config-audit-ignore parsing, finding suppression, audit trail |
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| `active-config-reader.mjs` | Read-only inventory: readActiveConfig(), detectGitRoot(), walkClaudeMdCascade(), readClaudeJsonProjectSlice() (longest-prefix match), enumeratePlugins(), enumerateSkills(), readActiveHooks(), readActiveMcpServers() (with cache → package.json tool-count fallback), estimateTokens() (v5: `'mcp'` kind = 500 + toolCount × 200) |
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| `tokenizer-api.mjs` | Anthropic `count_tokens` wrapper for `--accurate-tokens` (v5 N5); 5s AbortController timeout, exponential 429 backoff, key masking |
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| `humanizer.mjs` | Plain-language output translator (v5.1.0): `humanizeFinding`, `humanizeFindings`, `humanizeEnvelope`, `computeRelevanceContext`. Pure functions; never mutate inputs. Adds `userImpactCategory`, `userActionLanguage`, `relevanceContext` fields and replaces title/description/recommendation when a translation exists. Bypassed by `--raw` and `--json` paths. |
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| `humanizer-data.mjs` | TRANSLATIONS table for 14 scanner prefixes (CML/SET/HKV/RUL/MCP/IMP/CNF/COL/TOK/CPS/DIS/GAP/PLH/SKL). Three-step lookup: exact title → regex pattern → `_default` → fall through to original |
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## Action Engines (`scanners/`)
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| Module | Purpose |
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|--------|---------|
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| `fix-engine.mjs` | planFixes(), applyFixes(), verifyFixes() — 9 fix types |
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| `rollback-engine.mjs` | listBackups(), restoreBackup(), deleteBackup() |
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| `fix-cli.mjs` | CLI: `node fix-cli.mjs <path> [--apply] [--json] [--global]` |
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| `drift-cli.mjs` | CLI: `node drift-cli.mjs <path> [--save] [--baseline name] [--json]` |
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| `whats-active.mjs` | CLI: `node whats-active.mjs <path> [--json] [--verbose] [--suggest-disables]` — read-only active-config inventory |
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| `token-hotspots-cli.mjs` | CLI: `node token-hotspots-cli.mjs <path> [--json] [--global] [--output-file path] [--accurate-tokens] [--with-telemetry-recipe]` — prompt-cache token hotspots ranking with optional API calibration |
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| `manifest.mjs` | CLI: `node manifest.mjs <path> [--json]` — ranked system-prompt token-source table (v5 N2) |
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## Standalone Scanner
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| Module | Prefix | Purpose |
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|--------|--------|---------|
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| `plugin-health-scanner.mjs` | PLH | Plugin structure, frontmatter, cross-plugin conflicts (runs independently) |
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| `self-audit.mjs` | — | Runs all scanners + plugin health on this plugin itself |
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## Knowledge Base (`knowledge/`)
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| File | Content |
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|------|---------|
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| `claude-code-capabilities.md` | Feature register: 18 config surfaces, Anthropic guidance, relevance table |
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| `configuration-best-practices.md` | Per-layer best practices (v5: cache-stability guidance replaces Sonnet-era 200-line rule) |
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| `anti-patterns.md` | Common mistakes mapped to scanner IDs |
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| `hook-events-reference.md` | All 28 hook events with details |
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| `feature-evolution.md` | Feature timeline for staleness detection |
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| `gap-closure-templates.md` | Config-specific templates for closing gaps |
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| `prompt-cache-patterns.md` | Token-cost dynamics (prompt-cache patterns) — patterns powering the TOK scanner |
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| `cache-telemetry-recipe.md` | Manual `jq` recipe for verifying prompt-cache hit rate from session transcripts (v5 M7) |
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