chore: clean .gitignore cache

.grype.yaml

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+# Grype vulnerability suppression configuration
+# Automatically loaded by Grype for vulnerability scanning
+# Review and update when upstream fixes are available
+# Documentation: https://github.com/anchore/grype#specifying-matches-to-ignore
+
+ignore:
+  # CVE-2026-22184: zlib Global Buffer Overflow in untgz utility
+  # Severity: CRITICAL
+  # Package: zlib 1.3.1-r2 (Alpine Linux base image)
+  # Status: No upstream fix available as of 2026-01-16
+  #
+  # Vulnerability Details:
+  # - Global buffer overflow in TGZfname() function
+  # - Unbounded strcpy() allows attacker-controlled archive names
+  # - Can lead to memory corruption, DoS, potential RCE
+  #
+  # Risk Assessment: ACCEPTED (Low exploitability in Charon context)
+  # - Charon does not use untgz utility directly
+  # - No untrusted tar archive processing in application code
+  # - Attack surface limited to OS-level utilities
+  # - Multiple layers of containerization and isolation
+  #
+  # Mitigation:
+  # - Monitor Alpine Linux security feed daily for zlib patches
+  # - Container runs with minimal privileges (no-new-privileges)
+  # - Read-only filesystem where possible
+  # - Network isolation via Docker networks
+  #
+  # Review:
+  # - Daily checks for Alpine security updates
+  # - Automatic re-scan via CI/CD on every commit
+  # - Manual review scheduled for 2026-01-23 (7 days)
+  #
+  # Removal Criteria:
+  # - Alpine releases zlib 1.3.1-r3 or higher with CVE fix
+  # - OR upstream zlib project releases patched version
+  # - Remove this suppression immediately after fix available
+  #
+  # References:
+  # - CVE: https://nvd.nist.gov/vuln/detail/CVE-2026-22184
+  # - Alpine Security: https://security.alpinelinux.org/
+  # - GitHub Issue: https://github.com/Wikid82/Charon/issues/TBD
+  - vulnerability: CVE-2026-22184
+    package:
+      name: zlib
+      version: "1.3.1-r2"
+      type: apk  # Alpine package
+    reason: |
+      CRITICAL buffer overflow in untgz utility. No fix available from Alpine
+      as of 2026-01-16. Risk accepted: Charon does not directly use untgz or
+      process untrusted tar archives. Attack surface limited to base OS utilities.
+      Monitoring Alpine security feed for upstream patch.
+    expiry: "2026-01-23"  # Re-evaluate in 7 days
+
+    # Action items when this suppression expires:
+    # 1. Check Alpine security feed: https://security.alpinelinux.org/
+    # 2. Check zlib releases: https://github.com/madler/zlib/releases
+    # 3. If fix available: Update Dockerfile, rebuild, remove suppression
+    # 4. If no fix: Extend expiry by 7 days, document justification
+    # 5. If extended 3+ times: Escalate to security team for review
+
+# Match exclusions (patterns to ignore during scanning)
+# Use sparingly - prefer specific CVE suppressions above
+match:
+  # Exclude test fixtures and example code from vulnerability scanning
+  exclude:
+    - path: "**/test/**"
+    - path: "**/tests/**"
+    - path: "**/testdata/**"
+    - path: "**/examples/**"
+    - path: "**/*_test.go"
+
+# Output configuration (optional)
+# These settings can be overridden via CLI flags
+output:
+  # Report only HIGH and CRITICAL by default
+  # Medium/Low findings are still logged but don't fail the scan
+  fail-on-severity: high
+
+# Check for configuration updates
+# Grype automatically updates its vulnerability database
+# Run `grype db update` manually to force an update
+check-for-app-update: true