docs(development): define isolated PR packages and remaining porting gates

docs/development/pr-drafts/measurement-json-reload.md

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+# fix(measurement): restore JSON records into the existing singleton
+
+Target: `Akkudoktor-EOS/EOS:main`.
+Local branch: `fix/measurement-json-reload`.
+Local head: `dba0c9c` (based on main `7ebe6d7`).
+Status: locally ready for review; not pushed or published.
+
+## Proposed PR body
+
+When measurement persistence falls back to JSON, loading a saved file reports success
+but does not restore its records: validating a second `Measurement` returns the
+existing singleton. Parse and validate the individual records before inserting them
+into that singleton. Invalid files now return `False` instead of reporting success.
+
+Regression coverage checks round trips, timestamp preservation, repeated loading,
+merging with existing timestamps, malformed files without partial validation writes,
+and database-provider precedence. Four regression cases fail on unchanged main.
+With the fix, all 49 measurement tests pass.
+
+Validation: `python -m pytest tests/test_measurement_file_restore.py tests/test_measurement.py -q`;
+Ruff check and format check of the changed source; `git diff --check`.
+Run locally on Windows/Python 3.11.9. The repository's Linux/Python 3.13 pinned CI
+and complete test suite have not run for this branch yet.
+
+No settings or API schema changes. This fix is independent of #1256, #1305 and the
+GENETIC port.
+
+## Exact review scope
+
+- `src/akkudoktoreos/measurement/measurement.py`
+- `tests/test_measurement_file_restore.py`
+
+Only these two files differ from the pinned main. Do not publish the integration
+branch as part of this PR. After explicit publication approval, push this named
+branch and open a PR against main; inspect CI before any merge.