Add pack profile capture workflow

docs/pack-profile-analysis.md

@@ -40,6 +40,33 @@ python3 scripts/pack-profile-report.py \
   m2p=logs/pack_profile.m2p.txt
 ```
 
+For repeated testing, use the wrapper scripts:
+
+```bash
+./scripts/capture-pack-profile.sh \
+  --runtime-root ../m2dev-client \
+  --label pck
+```
+
+This stages the runtime into `build-mingw64-lld/bin`, runs the client with
+`M2PACK_PROFILE=1`, then archives:
+
+- raw report: `build-mingw64-lld/bin/log/pack-profile-runs/<label>.pack_profile.txt`
+- parsed summary: `build-mingw64-lld/bin/log/pack-profile-runs/<label>.summary.txt`
+
+To run a full `pck` vs `m2p` comparison in one go:
+
+```bash
+./scripts/compare-pack-profile-runs.sh \
+  --left-label pck \
+  --left-runtime-root /path/to/runtime-pck \
+  --right-label m2p \
+  --right-runtime-root /path/to/runtime-m2p
+```
+
+The script captures both runs back-to-back and writes a combined compare report
+into the same output directory.
+
 You can also summarize a single run:
 
 ```bash