[jochenwezel]

Browser startup, diagnostics and scoped-root fixes are now combined on the branch underlying this PR. Hosts receive original failures through DmsBrowser.OperationFailed while default dialogs stay concise; every browser root hides copy/rename/move/delete, including after collection-scope and busy-state restoration. Child workflows and permissions remain usable.

This PR integrates the related provider diagnostics, localization and browser-scope fixes from #94 at immutable source head 26f11400f865a6081895da4d35e59cbf2b6fe77e, through separate cherry-picked commits. The root/collection action policies share one mutation-access calculation so neither can restore forbidden root actions. Conflicts retained scoped-root failure context and both sets of localization resources.

Closes #96. Implements the remaining runtime work for #91, #92 and #93; checklist reconciliation precedes their closure. #95 is already integrated through #97. This aggregate supersedes the implementation of #94; the originating checkout is untouched.

Compatibility

BREAKING CHANGE: Synchronous WebDAV non-404 HTTP download failures use IOException instead of InvalidOperationException; transport and cancellation failures propagate without AggregateException wrapping. Public/protected signatures and external SDK dependency versions are unchanged. See FILESYSTEM_CONTRACTS.md, LOCALIZATION.md and the release notes.

Current combined verification

• Provider isolated suites: 593 passed net8.0, 593 passed net48.
• Startup/diagnostics/root/scoped-collection fixtures: 43 passed net8.0-windows, 43 passed net48 using the same sources in a temporary linked test host.
• BrowserUI/demo build: zero warnings/errors (legacy constructor warnings suppressed in tests).
• Broader combined BrowserUI selection: 394 passed, 20 declared native-monitor skips, 0 failed; native focus fixture excluded from this local run. Native-async-disabled provider suite: 342 passed net8.0. Complete current-head PR and post-merge CI passed. GUI tests display the mandatory nonactivating countdown/ETA notice.
• The prior Handle null path segments in CombinePath #97 and Unify provider diagnostics and guard scoped browser collection actions #94 isolated CI evidence is distinct from this combined head.

Release sequence

• Review and integrate the Allow null path segments when opening a DMS collection root #95 fix through Handle null path segments in CombinePath #97.
• Reconcile Unify provider diagnostics and guard scoped browser collection actions #94 and Fix browser startup, host diagnostics and root action policies #98 policies on the combined source tree and run focused isolated regressions on both GUI runtimes.
• Record the user's release authorization and use the existing exclusive shared-test window until completion. SDK development tasks are idle and defer live mutations; no local remote-server tests run alongside CI.
• Complete and inspect the serialized PR build/test matrix and native SDK-source validation on exact head 0262030 (all twelve remote jobs and all three OSes green; Windows full GUI suite 411 passed, 20 declared skips).
• Merge through PR Fix browser startup, host diagnostics and root action policies #98 at main commit 97c897f; its source tree is identical to the verified PR tree.
• Complete the post-merge Level-2 build/test matrix on main (run 38153854654), as required by TESTING.md for transfer/sharing changes before release. Native large-transfer opt-in is unchanged and not part of this bugfix release. The post-merge Level-2 isolated OS and native source checks are already green; all twelve server jobs passed.
• Create the unused valid NuGet release tag and publish through the GitHub release-created event.
• Verify both NuGet packages and all six binary/demo release archives.

All test matrices retain their existing per-account server concurrency groups. No feature branch cleanup will occur before the release workflow succeeds.

Final combined release checkpoint (2026-10-11)

This checkpoint supersedes prior pending integration/publication statements. The immutable changes from PR #94 were integrated with #95/#96 and the provider-independent root fix through merged PR #98 at main commit 97c897f172149a585776466fe85fa13f5a9de87f. The original #94 checkout was not changed; that PR was closed as superseded.

• Complete exact-main cumulative Level-2 CI: all three isolated OS jobs and all twelve serialized real-server jobs passed, covering Scopevisio Teamwork, generic WebDAV, ownCloud and Nextcloud on Windows/Linux/macOS.
• Inspect retained XML: 597 isolated provider cases passed on each OS; all 387 remote cases passed with no skips or failures. Windows GUI passed 411 cases with 20 declared optional native-monitor skips.
• Complete exact-main Level-2 native SDK-source validation, using isolated fake transport, separately from the remote matrix. External SDK package pins are unchanged.
• Publish DMS 2026.10.11.0 through the release-created workflow run 38161759973.
• Download and inspect both NuGet packages, their framework outputs and matching Providers dependency, plus all six binary/demo archives (including the Teamwork runtime dependency).
• Consume the published Providers/BrowserUI packages in an isolated external test program on .NET 8 and .NET Framework 4.8; verify null-path handling and compile/inspect the public failure event contract without GUI or server access.

Focused browser startup/diagnostics/root/scoped-collection fixtures passed 43 cases on net8.0-windows and the same 43 through a temporary linked-source net48 host. No full net48 GUI suite or new scoped-instance-switching scenario is claimed. Native large-transfer opt-in remains unchanged; no new 256 MiB/4 GiB live test is inferred. Broader RTL/DPI and consuming-application manual acceptance remain separate.

[github-actions]

Isolated Test Statistics (macos-latest)

597 tests  +49   597 ✅ +49   10s ⏱️ -8s
  1 suites ± 0     0 💤 ± 0 
  1 files   ± 0     0 ❌ ± 0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Isolated Test Statistics (ubuntu-latest)

597 tests  +49   597 ✅ +49   14s ⏱️ -1s
  1 suites ± 0     0 💤 ± 0 
  1 files   ± 0     0 ❌ ± 0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Isolated Test Statistics (windows-latest)

597 tests  +49   597 ✅ +49   11s ⏱️ -2s
  1 suites ± 0     0 💤 ± 0 
  1 files   ± 0     0 ❌ ± 0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[jochenwezel]

Integration review of exact head 02620300437903a6971f29ed41f0b5bbcfebab0d found no outstanding source blocker. Checked original-exception preservation, subscriber isolation/cleanup, localized default presentation, scoped-root request context, merged root/collection permission policies, stale command guards, and the documented WebDAV exception compatibility change. Public/protected signatures and SDK pins remain unchanged.

Current-head isolated CI is green on all three OSes, including Windows BrowserUI smoke tests; native SDK-source validation is green on all three OSes. Local combined regressions pass on net8.0/net48 (593 providers and 43 focused GUI tests each), with 394 broad GUI cases and 342 native-disabled provider cases passing separately.

The complete serialized PR server matrix is now starting as the preceding #95 main matrix releases its per-account locks. Running workflows are preserved through cleanup. Merge and release remain gated on their required verification; complete post-merge CI will verify the final main commit before release creation. No unfinished server result or historical #94/#97 green head is treated as combined verification.

The user explicitly authorized publishing this bugfix release; the existing exclusive test window lasts until completion. The release notes flag the WebDAV exception changes as breaking changes. No external SDK dependency update is included.

[github-actions]

Scopevisio Teamwork Test Statistics (macos-latest)

20 tests  ±0   20 ✅ ±0   1m 58s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

WebDAV Test Statistics (ubuntu-latest)

16 tests  ±0   16 ✅ ±0   2m 1s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Nextcloud Test Statistics (ubuntu-latest)

16 tests  ±0   16 ✅ ±0   2m 3s ⏱️ ±0s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

OwnCloud Test Statistics (windows-latest)

16 tests  ±0   16 ✅ ±0   2m 0s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Scopevisio Teamwork Test Statistics (windows-latest)

20 tests  ±0   20 ✅ ±0   2m 4s ⏱️ +5s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

WebDAV Test Statistics (windows-latest)

16 tests  ±0   16 ✅ ±0   2m 0s ⏱️ ±0s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Nextcloud Test Statistics (windows-latest)

16 tests  ±0   16 ✅ ±0   2m 3s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

OwnCloud Test Statistics (ubuntu-latest)

16 tests  ±0   16 ✅ ±0   2m 1s ⏱️ +2s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Scopevisio Teamwork Test Statistics (ubuntu-latest)

20 tests  ±0   20 ✅ ±0   1m 59s ⏱️ ±0s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

WebDAV Test Statistics (macos-latest)

16 tests  ±0   16 ✅ ±0   2m 1s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

OwnCloud Test Statistics (macos-latest)

16 tests  ±0   16 ✅ ±0   2m 1s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[github-actions]

Nextcloud Test Statistics (macos-latest)

16 tests  ±0   16 ✅ ±0   2m 4s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 0262030. ± Comparison against base commit 19fe27c.

[jochenwezel]

PR #98 is merged at 97c897f172149a585776466fe85fa13f5a9de87f. The final main source tree was compared byte-for-byte with the verified PR head 02620300437903a6971f29ed41f0b5bbcfebab0d; there is no source difference.

• Complete PR released-package CI, all three isolated OS jobs, Windows full BrowserUI tests (411 passed, 20 declared native-monitor skips), and all twelve serialized server jobs: https://github.com/CompuMasterGmbH/CompuMaster.Dms/actions/runs/38152286206 .
• Complete current-PR native SDK-source CI on all three OSes and Windows net48: https://github.com/CompuMasterGmbH/CompuMaster.Dms/actions/runs/38152286204 .
• Review and merge the combined implementation.
• Complete cumulative post-merge Level-2 acceptance on exact main head: https://github.com/CompuMasterGmbH/CompuMaster.Dms/actions/runs/38153854654 . It includes the Level-1 cases and adds extended sharing/copy/move/overwrite/failure checks required by TESTING.md before release. Native live opt-in is unchanged and was not requested.
• Complete post-merge Level-2 isolated native SDK-source validation: https://github.com/CompuMasterGmbH/CompuMaster.Dms/actions/runs/38153856406 .
• Publish and verify Providers/BrowserUI version 2026.10.11.0 and all six release archives.

The user's release authorization is recorded in the coordination chat. The shared-server exclusive window remains reserved until completion. The release branch is retained until all release verification succeeds; repository automatic branch deletion was temporarily disabled and its original setting was saved for restoration.