ci(rust): convert rust-ci.yml to thin wrapper (standards#174)

[hyperpolymath]

Summary

Replaces the per-repo rust-ci.yml copy with a 5-line wrapper invoking the shared reusable workflow filed in standards#174.

Pinned to that PR's HEAD SHA (4fdf4314b4ab54269adbaff10e30e483b5e86845); will resolve to standards/main once #174 merges.

Why

Estate audit found ~87 rust-ci.yml copies across the estate with significant drift. Converting each to a 5-line wrapper means future Rust CI changes propagate in one place.

This PR is part of the foundational sweep following the established standards#168 precedent (governance-reusable + absolute-zero#41 + tma-mark2#41 wrappers).

Variant: trivial ("baseline check + clippy + fmt + test")

Test plan

• CI: rust-ci job invokes the reusable and reports the same checks
• Awaiting standards#174 merge before this becomes useful long-term (still works today via SHA pin)

🤖 Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 50 issues detected

Severity	Count
🔴 Critical	2
🟠 High	31
🟡 Medium	17

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "reason": "No test directory or test files found",
    "type": "no_tests",
    "file": "/home/runner/work/docmatrix/docmatrix",
    "action": "flag",
    "rule_module": "honest_completion",
    "severity": "high",
    "deduction": 20
  },
  {
    "reason": "Action hyperpolymath/standards/.github/workflows/governance-reusable.yml@main needs attention",
    "type": "unpinned_action",
    "file": "governance.yml",
    "action": "pin_sha",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "codeql.yml lists `language: javascript-typescript` but the repo has no source files in any CodeQL-scannable language. The analyze job will exit 'no source files' on every run. Switch the matrix to `actions` (which scans workflow files — every repo has those).",
    "type": "codeql_language_matrix_mismatch",
    "file": "codeql.yml",
    "action": "switch_codeql_matrix_to_actions",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "unwrap_or(0) with dangerous default (1 occurrences, CWE-754)",
    "type": "unwrap_dangerous_default",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-db/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "from_raw constructs types from raw pointers without safety checks (2 occurrences, CWE-676)",
    "type": "from_raw",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-core/src/ffi.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "as_ptr exposes raw pointer that may dangle or alias unsafely (8 occurrences, CWE-676)",
    "type": "as_ptr",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-core/src/ffi.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "medium"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (2 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-core/src/formats/djot.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "unwrap_or(0) with dangerous default (1 occurrences, CWE-754)",
    "type": "unwrap_dangerous_default",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-core/src/formats/orgmode.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (1 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/docmatrix/docmatrix/crates/formatrix-core/benches/format_bench.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "Nominal-only SAST in docmatrix: codeql.yml language matrix contains no language present in the repo and lacks `actions`, so CodeQL records zero results on every commit. Remediation: set the CodeQL matrix to `language: actions`.",
    "type": "StaticAnalysis",
    "file": "/home/runner/work/docmatrix/docmatrix",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  }
]

Powered by Hypatia Neurosymbolic CI/CD Intelligence