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Open_Ultra_SAST/.kiro/specs/learned-decision-engine/tasks.md
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Marius CiepluchandClaude Opus 5.5 af81bccc70 feat(ruleset): tag framework-specific knowledge as optional priors (decision-engine task 2)
ruleset/frameworks.toml lists 19 framework and library ids (wordpress, flask, django, express,
spring, jakarta-servlet, react, vue and 11 libraries), each with its languages, dependency
package names and a symbol lexicon used only by the lint and for stratification.

Every framework/library entry of section 2 is tagged `framework`/`library`, and mixed entries
are split so a tag covers a whole entry (split pieces keep the entry's id and flags, in place):
semantic facts 38 tagged entries (wordpress 6, django 6, flask 4, express 4, jakarta-servlet 3,
pyyaml 2, one each for spring, sqlalchemy, requests, httpx, lodash, node-http-clients,
escape-html, sanitize-html, dompurify, esapi, commons-text, react, vue); the dispatch fact
behind the hook-as-source path is wordpress; the PHP layout row is renamed php_layout and stays
untagged (a product filter). Quick rules: 9 tagged (wordpress 6, flask, pyyaml,
node-http-clients); php-unserialize is split into php-unserialize and php-maybe-unserialize;
the lint also caught WordPress escapers in exclusions and axios/yaml.load in mixed rules, so
those keep their ids as tagged rules and gain a `fallback_for` language-level rule (6) that is
active only when the prior is off.

load_facts and load_ruleset take priors ("all" by default -- today's scan --, "off", or a set
of ids). tests/test_semantic_priors.py: the lint (no untagged entry contains a lexicon symbol
of its language), "off" removes exactly the tagged entries and activates the fallbacks, split
entries keep their language-level calls. Rule and layout counts in three existing tests follow the split and the rename.

Unchanged defaults: test_benchmark_output_is_byte_identical_to_golden_baseline passes, and the
quick findings of all 15 benchmark manifests (full StaticFinding records) are byte-identical
before and after. priors=off on the same manifests: 61 -> 57 findings; the 4 lost are js-ssrf
(axios), php-wpdb-sql-composition, python-ssti and python yaml.load; 5 PHP and 1 Python finding
move to their fallback rule at the same location. Semantic calls with priors off: php 75/92,
python 32/77, javascript 42/70, java 24/41, c 27/27 (the engine-side effect needs Joern and was
not measured).

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo
2026-09-30 18:49:05 +02:00

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Markdown

# Implementation Plan
Order follows the design's commit sequence. Every task is a commit gated on the full suite's own exit code,
`ruff check`, `ruff format --check` and `mypy`. No reported number changes until task 9 adopts a model; without an
adopted model every path is today's. Tasks 5, 7 and 10 spend model money or host hours: each starts only after
the maintainer confirms its budget.
- [x] 1. Schema and features
- `learn/schema.py` (closed, typed allow-list; no identities; missing != zero), `learn/features.py` (host
builder), new memory `KINDS`, `plane/tasks/features.py` and the `remember` input; tests enforcing the
allow-list and the exclusion of label-carrying fields.
- _Requirements: 1.1, 1.2, 1.3, 7.2_
- [x] 2. Framework tags
- `ruleset/frameworks.toml`; tag and split every framework/library entry listed in design section 2; `priors=`
in the semantic and quick loaders (default `all`, so today's scan is unchanged -- the golden benchmark test
stays byte-identical); a lint test that no untagged framework entry remains.
- _Requirements: 8.2, 8.4_
- [ ] 3. Role inference
- `learn/roles.py` (deterministic wrapper inference), `plane/tasks/roles.py` (model roles, the `model_sinks.py`
approach), the vocabulary overlay for the engine; fixture tests with no model calls.
- _Requirements: 8.1_
- [ ] 4. Labels
- `learn/sources.toml` (fail-closed allowed sources, v3 excluded unread), `learn/labels.py`, `ousast learn
labels`, repository-group normalisation and CVE merge, the `assumed_benign` source mined from non-security
commits (separate, never merged); a first label snapshot committed as counts only.
- _Requirements: 2.1, 2.2, 2.3, 7.1_
- [ ] 5. Harvest (needs budget go-ahead)
- A plane Run of verify a/b on the verify-family pairs and development cases (~$6, ceiling $10), model roles on
the candidate files (ceiling $10), engine features for the pair corpus on the host (frozen source, one
container at a time, background).
- _Requirements: 1.1_
- [ ] 6. Train, calibrate, evaluate
- `learn/{folds,train,calibrate,evaluate}.py` (repository-grouped, leave-one-source-out, leave-one-framework-out,
nested tuning), the model blob API in `plane/memory.py`, `ousast learn train|evaluate|curve`, the first
evaluation report with priors off under `benchmarks/measurements/<date>-decision-engine-v1/`.
- _Requirements: 3.1-3.5, 5.1, 5.2, 7.3, 7.4, 8.3_
- [ ] 7. Experiments (exp-001 needs budget go-ahead)
- `learn/experiments.py`, `register`, `experiment-outcome`, Run annotation checks, `OUSAST_VERIFY_CALLERS`;
exp-001 (known-callers line on/off, ~$7.7 expected, ceiling $15) registered, run and recorded -- an
inconclusive result is pre-registered as likely.
- _Requirements: 4.1-4.4_
- [ ] 8. Integration
- The `decide` task, the `scan` decision stage and `dropped_by_engine.json`, `pre-push` admission with the engine
(structural admission reasons unchanged), report fields, the fallback line, the opt-in adaptation layer.
- _Requirements: 6.1-6.3, 7.3, 7.5_
- [ ] 9. Adopt
- `ousast learn adopt`, packaged models for the families that pass, the priors-on/off experiment per framework
with a recorded decision.
- _Requirements: 3.2, 8.2_
- [ ] 10. The one-time v3 check
- Commit `prediction-v3.json` first; then v3 is run under protocol v3 and `result-v3-engine.json` is committed.
Nothing between the two commits may touch the engine, features, priors or thresholds.
- _Requirements: 5.3_