fix(java-lsp): resolve symlinked git-clone project paths to virtual URIs

[delchev]

Problem

Opening a Java problem (Problems → Java tab) or a Hierarchy node for a project cloned via the Git perspective failed with a 404:

GET /services/ide/workspaces/file:/Users/.../target/dirigible/repository/.git/admin/workspace/
    sample-intent-multi-model/countries/gen/countries/api/settings/CityController.java  404

The editor received a raw absolute filesystem path instead of a workspace-relative one.

Root cause

Dirigible stores git clones under repository/.git/<user>/<workspace>/<clone-repo>/ and symlinks each contained project into the workspace root (root/users/<user>/<workspace>/<project> → the clone dir). JDT.LS resolves those symlinks and reports the canonical clone path.

JdtLsInstance's stdout real→virtual translation only did json.replace(realRoot, virtualRoot), where realRoot is …/root/users/<user>/<workspace>/. That never matches the canonical …/.git/…/<clone>/<project>/… path, so the untranslated real URI leaked to the browser.

A client-side lastIndexOf('/workspace/') resolver (like the debugger's) can't fix this — it can't know <clone-repo> is a folder to drop, and would produce /workspace/<clone-repo>/<project>/…, which still 404s. The mapping is only knowable on the server, where the symlink targets are visible.

Fix

JdtLsInstance now maintains a canonical-real → virtual URI prefix map, one entry per project whose workspace directory is a symlink (child.toRealPath() ≠ nominal path). It's rebuilt on a 5s TTL so a freshly cloned project is picked up without restarting JDT.LS. translateToVirtual() applies the plain realRoot replace (regular projects) then the symlink map (git clones), so diagnostics, call/type hierarchy, and all forwarded LSP messages get correct virtual URIs.

Because the fix is server-side, the client toWorkspacePath() (strip file:///workspace) keeps working unchanged for the Problems and Hierarchy views.

Also swaps the view-java labels per request: view "Java" → "Hierarchy", inner tab "Hierarchy" → "Java" (tab id unchanged).

Verification

Rebuilt ide-java-lsp + view-java and the application jar, restarted, and against the cloned sample-intent-multi-model project:

• POST /services/ide/java-lsp/diagnostics now returns virtual URIs, e.g. file:///workspace/workspace/countries/gen/countries/api/settings/CountryController.java (clone prefix gone).
• The exact URL the editor builds — GET /services/ide/workspaces/workspace/countries/gen/countries/api/settings/CityController.java — returns 200.
• formatter:validate passes on the changed module.

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