Fix JSON syntax errors in .devcontainer/devcontainer.json (removed
invalid JS-style // comments) and .devcontainer/opencode.json (removed
90+ trailing commas). Apply auto-fixes for end-of-file and trailing
whitespace issues across 100+ files. Fix SIM105 ruff violations in
benchmarks/core_circuit_breaker_bench.py (use contextlib.suppress).
Note: The security fix from issue #7478 (validate_path startswith bypass)
was already delivered to master in commit e18ac5f2. This PR as currently
structured is non-atomic (35 commits across 10+ issues) and needs
significant restructure before merge. This commit only addresses the
CI/pre-commit failures.
ISSUES CLOSED: #7478
Consolidate 141 BDD feature files that each complete in under 0.1 seconds
into 25 domain-grouped feature files, reducing subprocess count from 339
to ~223. Each consolidated file groups scenarios from the same domain/module
that share step definitions and fixtures. All scenarios are preserved with
clear comment headers indicating their original source file.
This reduces subprocess overhead by ~116 invocations (141 original files
replaced by 25 consolidated files), targeting the 42% of subprocess count
that contributed only 0.2% of actual test runtime.
ISSUES CLOSED: #485