feat(cli): add /heapdump for process memory snapshots#152
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emal-avala merged 5 commits intomainfrom Apr 22, 2026
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Writes a best-effort memory snapshot (RSS, VSZ, peak, per-segment sizes where available) to a timestamped file under the user's data directory. Useful for attaching to bug reports when investigating memory growth or leaks. Linux: parses /proc/self/status for VmPeak/VmSize/VmRSS/VmData/etc. macOS: shells out to `ps -o rss,vsz` to avoid a mach binding dep. Other platforms: prints an "unsupported" notice. Hidden from /help since it's a diagnostic command, not a daily-use one.
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The tests module only has Linux-specific tests; on Windows/macOS the `use super::*` was unused and fails `-D warnings`. Moving the cfg guard up to the mod itself avoids duplicating it per test and keeps the file lint-clean on every platform. Also: cargo fmt.
# Conflicts: # crates/cli/src/commands/mod.rs
# Conflicts: # crates/cli/src/commands/mod.rs
# Conflicts: # crates/cli/src/commands/mod.rs
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Summary
Adds `/heapdump` — writes a best-effort process memory snapshot to a timestamped file under the user's data directory. Hidden from `/help` (diagnostic command, not daily-use).
Writes to `{data_local}/agent-code/heapdumps/YYYYMMDD-HHMMSS.txt` with a header noting timestamp, PID, version, and platform.
Why
When investigating memory growth or leaks, users currently have no way to capture a snapshot from within the running session. A first-class heap profiler would require rebuilding with a profiling allocator — this OS-level snapshot is the 80% solution at 0 deps.
Test plan