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+# Qt6 Migrated Modules First Release - Implementation Report
+
+## Date
+2026-10-16
+
+## Summary
+Successfully configured the Qt6-migrated modules release pipeline to use script-based filtering instead of physical file removal. The release scope (M = {TetraIF, Z, Lts/Common}) is now enforced at package build time through the `--release_scope` flag in the RPM/DEB builder.
+
+## Changes Made
+
+### 1. rpmbuild/make_rpm_ubuntu26.py
+**Commit:** c0b9df9 "Add release scope filtering to DEB package builder"
+
+- Added `--release_scope` command-line argument
+- Updated `copy_src_dir_to_dest_dir()` function to filter source files when `release_scope=True`
+- Updated `build_deb()` function to accept and pass `release_scope` parameter
+- Release scope includes only:
+  - TetraIF/
+  - Z/src/
+  - Lts/Common/
+  - Supporting infrastructure: CMakeLists.txt, cmake/, tests/, specs/, include/, translations/, external/
+  - Build/config files: .gitignore, .envrc, doxygen/, src/
+
+### 2. jenkins-ci-rme/jenkins_builder_ubuntu26.sh
+**Commit:** eef05c1 "Enable release scope filtering in Jenkins builder"
+
+- Added `--release_scope` flag to make_rpm_ubuntu26.py invocation
+- Works in conjunction with existing `-DRELEASE_BUILD=ON` CMake flag
+
+### 3. RELEASE_SCOPE_AUDIT.md
+**Commit:** 08a10dd92 "Document release scope packaging strategy"
+
+- Documented complete module sets: R (all), M (release), S (release + dependencies), R\S (excluded)
+- Added packaging strategy section explaining script-based filtering approach
+- Listed CMake configuration details and file references
+- Documented validation requirements
+
+### 4. Parent Repository Submodule Updates
+**Commit:** a1d5b445e "Update submodule references for release scope filtering"
+
+- Updated submodule pointers to include new commits in rpmbuild and jenkins-ci-rme
+
+## Approach: Script-Based Filtering
+
+Instead of physically removing non-release files from repositories, the release scope is enforced at package build time:
+
+**Benefits:**
+- Preserves full source history and development context
+- Same source tree supports both release and development builds
+- Reversible and auditable through script changes
+- Clear separation between source control and release artifacts
+
+**Implementation:**
+- CMake `RELEASE_BUILD=ON` option controls which modules are built
+- `--release_scope` flag controls which files are included in DEB packages
+- Jenkins pipeline passes both flags for consistent release builds
+
+## Module Scope
+
+### Release Modules (M)
+1. **TetraIF/** - Complete TetraIF module (CoPrtCnv, LogView, PrtCnv)
+2. **Z/** - Complete Z module (all src/ subdirectories)
+3. **Lts/Common/** - Common utilities (excludes LtsElevation)
+
+### Required Dependencies (S \ M)
+- cmake/, include/, src/, tests/, specs/, translations/, external/
+
+### Excluded (R \ S)
+- Lts/Tools/, Lts/Application/, Lts/DDS/, Lts/Services/, Lts/Proxies/
+- Lts/Plugins/ (except ProjectDataManagement for generated headers)
+- Lts/Viewer/, Lts/Projects/, Lts/LtsElevation/
+
+## Validation Status
+
+- [x] Repository structure validated
+- [x] SSH/GPG signing configuration verified
+- [x] CMakeLists.txt RELEASE_BUILD option confirmed (lines 975-987)
+- [x] RELEASE_GROUP3_TARGETS identified (20+ targets)
+- [x] Script-based filtering implemented in make_rpm_ubuntu26.py
+- [x] Jenkins builder updated to pass --release_scope flag
+- [x] All commits signed with SSH key and Co-authored-by trailer
+- [ ] Docker build validation with CTest (pending execution)
+- [ ] End-to-end release pipeline test (pending execution)
+
+## Repositories
+
+All repositories on branch `story/release-at-16-oct-2026`:
+
+1. **qt-migration-legatus** - Main source code (no file changes, script filtering only)
+2. **jenkins-ci-rme** - CI/CD pipeline (commit eef05c1)
+3. **rpmbuild** - Package build scripts (commit c0b9df9)
+
+## Next Steps
+
+1. Run Docker build validation with CTest to verify release modules build correctly
+2. Execute end-to-end pipeline test to confirm DEB packages contain only release scope files
+3. Push all commits to remote repositories
+4. Trigger Jenkins pipeline for full release validation
+
+## Sign-off
+
+All commits signed with:
+- SSH key: /home/torsten/.ssh/gitea2-login.pub
+- GPG format: ssh
+- Allowed signers: /home/torsten/sandbox/qt6-migration-pipeline/ci/allowed_signers
+- Trailer: Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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