Replace incremental build scenario with binary size (#64453)

## Summary

- remove the `incremental-editor` Wezel scenario and its source patch
- build the `zed` binary with the release profile
- track both its original size and the size of a separately stripped
copy
- lock the `exec` and `filesize` foragers and regenerate the experiment
schema
- skip the full Zed test suite when a pull request changes only
`.wezel/**`

## Validation

- `wezel project tool sync`
- `wezel experiment lint`
- `wezel project status`
- smoke-tested the copy-and-strip command against a debug-symbol-bearing
executable on macOS
- `rustfmt --check tooling/xtask/src/tasks/workflows/run_tests.rs`
- `actionlint .github/workflows/run_tests.yml`
- exercised the CI path filter with Wezel-only, mixed, docs-only, and
source-only file sets

The full Zed release build was not run locally.

Release Notes:

- N/A

---------

Co-authored-by: Amp <amp@ampcode.com>

.github/workflows/run_tests.yml

@@ -115,7 +115,7 @@ jobs:
         check_pattern "run_action_checks" '^\.github/(workflows/|actions/|actionlint.yml)|tooling/xtask|script/' -qP
         check_pattern "run_docs" '^(docs/|crates/.*\.rs)' -qP
         check_pattern "run_licenses" '^(Cargo\.lock$|script/.*licenses|(?:.*/)?LICENSE[^/]*$)' -qP
-        check_pattern "run_tests" '^(docs/|script/update_top_ranking_issues/|\.github/(ISSUE_TEMPLATE|workflows/(?!run_tests))|extensions/)' -qvP
+        check_pattern "run_tests" '^(docs/|script/update_top_ranking_issues/|\.github/(ISSUE_TEMPLATE|workflows/(?!run_tests))|[.]wezel/|extensions/)' -qvP
         # Detect changed extension directories (excluding extensions/workflows)
         CHANGED_EXTENSIONS=$(echo "$CHANGED_FILES" | grep -oP '^extensions/[^/]+(?=/)' | sort -u | grep -v '^extensions/workflows$' || true)
         # Filter out deleted extensions