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Expose pure local identification-risk helpers in the API - #259
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Introduce a safety module in tinymemory-api that classifies identification risk and performs structured redaction using only local matching, with no engine or runtime dependency. Hosts keep ownership of privacy policy and all I/O. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
Reordered the re-exports and test imports into a consistent ordering and removed stray trailing blank lines. No behaviour change. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
…tes/tinymemory-api/src/safety/r Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
Update the safety module's doc comments to point at the current `crate::safety::scan` and `crate::safety::redact_identifiers` paths instead of stale module references, and reword the scoring notes to describe the fixed category weight and co-occurrence bonus. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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The title clearly and concisely describes the main change: exposing pure local identification-risk helpers through the API. |
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The regex-based detector and redaction helpers are now opt-in via a `local-safety` feature, so the default engine contract stays regex-free while the risk vocabulary remains available by default. Documentation and the safety contract test were updated to reflect the new feature gate. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Inline comments:
Review comments at @crates/tinymemory-api/src/safety/detector_tests.rs:
- Line 1: Add a concise module-level `//!` description at the start of the test
module in `detector_tests.rs`, before `use super::*;`, describing the PII
detector tests.
Review comments at @crates/tinymemory-api/src/safety/rules.rs:
- Around line 107-163: Update the IPv4 pattern in build_rules so the regex
captures the complete dotted numeric sequence, allowing is_ipv4 to reject
invalid sequences rather than matching a valid-looking suffix. Add a regression
test that verifies scanning and redact_identifiers leave a value such as
999.1.2.3.4 unflagged and unchanged.
- Around line 107-163: Update CreditCard match handling in scan and
redact_identifiers so a match is accepted or redacted only when it represents
the complete card candidate, not a prefix continued by a separator and digit.
Apply this boundary check before validation and redaction; leave is_ipv4
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crates/tinymemory-api/Cargo.tomlcrates/tinymemory-api/README.mdcrates/tinymemory-api/src/lib.rscrates/tinymemory-api/src/safety/README.mdcrates/tinymemory-api/src/safety/detector.rscrates/tinymemory-api/src/safety/detector_tests.rscrates/tinymemory-api/src/safety/mod.rscrates/tinymemory-api/src/safety/mod_tests.rscrates/tinymemory-api/src/safety/rules.rscrates/tinymemory-api/src/safety/types.rscrates/tinymemory-api/tests/safety_contract.rs
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The weight method is only used by the local-safety scan, so it is now compiled only when that feature is enabled. This avoids dead-code warnings in builds without the feature. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Register the new local_safety_no_logger integration test with required-features so it only builds when the local-safety feature is enabled, matching the existing safety_contract test. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
…ry-api/src/safety/README.md,cra Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Tiny Sweeper review
Last completed reportTiny Sweeper reviewTiny Sweeper reviewed this change across 5 lane(s) and found 0 active actionable finding(s). Detailed lane evidence and any incomplete work are listed below. State: Incomplete Review snapshot
Completeness: Incomplete FeaturesNone identified with supported citations. TestsNo supported feature-to-test mapping was produced. Test execution is not inferred. FindingsNo active actionable findings. Could not review: crates/tinymemory-api/Cargo.toml, crates/tinymemory-api/src/safety/README.md, crates/tinymemory-api/src/safety/detector.rs, crates/tinymemory-api/src/safety/mod_tests.rs, crates/tinymemory-api/src/safety/rules.rs, crates/tinymemory-api/src/safety/types.rs, crates/tinymemory-api/tests/local_safety_no_logger.rs, crates/tinymemory-api/tests/safety_contract.rs, docs/architecture/overview.md, docs/specs/memory-v2.md Before merge
How this fits togetherflowchart LR
n0["scan"]:::impacted
n1["PiiCategory"]:::impacted
n2["Rule"]:::impacted
n3["PiiScanResult"]:::impacted
n0 -->|uses| n1
n0 -->|uses| n3
n2 -->|uses| n1
n3 -->|uses| n1
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classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
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Agent review detailscritique
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tinysweeper found nothing blocking, but could not review everything, so this is not an approval: crates/tinymemory-api/Cargo.toml, crates/tinymemory-api/src/safety/README.md, crates/tinymemory-api/src/safety/detector.rs, crates/tinymemory-api/src/safety/mod_tests.rs, crates/tinymemory-api/src/safety/rules.rs, crates/tinymemory-api/src/safety/types.rs, crates/tinymemory-api/tests/local_safety_no_logger.rs, crates/tinymemory-api/tests/safety_contract.rs and 2 more.
$0.0076 · 886,484 in / 103,962 out · 203,904 cached (23%) · ladder/vectors-oai3, deepseek-v4.1-flash, · 694 embedded
critique: $0.0056 · 402,578 in / 82,393 out · 140,672 cached (35%) · deepseek-v4.1-flash,
security: $0.0003 · 342,931 in / 3,478 out · 38,912 cached (11%) · deepseek-v4.1-flash
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description: $0.0010 · 62,624 in / 12,847 out · 19,968 cached (32%) · deepseek-v4.1-flash
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Expose pure local identification-risk classification and structured redaction through tinymemory-api::safety. This preserves the OpenHuman detector's categories, counts, scoring, co-occurrence bonus, strong-identifier override, validators and replacement text, with its behavioral tests moved beside the owner code.
Memory uses tinymemory-api as its public contract. These helpers resemble its existing pure fingerprint/time-hint helpers: they perform no I/O and link no engine, storage or runtime. Hosts retain warning/blocking policy and write orchestration. The existing integrations safety scrubber remains independent. Regex supports local matching; diagnostics remain host-owned and the API never invokes a global logger; results contain categories/counts, never matched substrings.
Validation: the public API regression first failed with a missing safety module, then passed. The API suite passes 112 unit tests plus the public contract case and doctests. Full workspace formatting, Clippy (--all-targets --all-features -- -D warnings), build (--all-targets --all-features) and tests (--all-features) pass. Rustdoc with warnings denied and final doctests pass after correcting migrated links. Built-in regex compilation follows the existing safety pattern's narrowly documented invariant; fixture tests compile every rule.
Prerequisite for tinyhumansai/openhuman#7418; part of tinyhumansai/openhuman#7390. Additive public API, no product behavior change.
The regex detector/redactor is opt-in through local-safety; risk vocabulary remains public by default. Default API Clippy with warnings denied and tests pass, and the existing forbidden-dependency tree guard passes unchanged (no regex/runtime/IO dependency in the default contract). Enabled API and full all-feature workspace gates pass. OpenHuman enables the dependency feature explicitly for its existing redaction caller.
Review correction: a callback-count regression failed with two host logger callbacks, then passed after removing logging from the pure API (log is test-only). Detector return values and redaction remain unchanged. Accepted spec/architecture ownership docs and module test docs now describe the pure optional helper separately from storage-item scrubbing. Inherited matcher limitations are confirmed with synthetic runtime examples and tracked in owner issues260 (grouped IBAN),261 (overlapping phone counts) and262 (card/CVV boundaries); none is claimed fixed by this relocation. Full enabled/default gates and strict docs pass after these changes.