fix(sdk): reject competing durable OTel views

[zhongkechen]

Reject competing bundled OTel views across explicit and environment configuration. The loader validates all declared provider types before calling any environment-selected factory, so a conflicting dynamic pair cannot install sampler or ID-generator wrappers on the global tracer. Diagnostics identify the concrete plugin classes, including subclasses.

The bundled views declare inherited static metadata through a namespaced symbol shared across package copies. The base hook interface and ordinary plugin properties remain unchanged. Existing instance metadata remains supported, and returned instances are checked too so a v1 provider that declares a broader base class cannot bypass exclusivity. Explicit instances have already been constructed by the application before registration; validation cannot undo that construction.

Compatibility stays additive: provider API version 1 and handler-scoped factory calls remain unchanged. OTel's core peer stays optional (>=2.4.0 <3.0.0), including separate OTel-only layers beside a released core. The new exclusivity guarantee requires the coordinated core 2.7 / OTel 1.2 pair. The per-invocation factory migration remains separate in #924.

Validation:

• All 107 core suites / 1,292 tests pass.
• All 38 focused OTel composed and installed-consumer tests pass, covering both dynamic orders, mixed/explicit configuration, preserved global tracer fields, inherited subclass groups/names, valid single views, released/current package combinations, strict declarations and separate layers.
• Seven new regression cases fail against the previous runtime and pass with the fix.
• Core/OTel ESM, CJS and declaration builds, both package type checks, root Biome (1,177 files), and git diff --check pass.

The branch retains the shared bounded deployment/read-retry and scheduler-sensitive example fixture repairs from #959. Installed-consumer setup rebuilds candidate packages before packing to avoid stale outputs. Cloud checks run through PR CI; no packages were published.

Fixes #943.

[github-actions]

Codex AI review

No actionable findings. Residual test risk: installed-package compatibility coverage exercises CommonJS consumers only; the equivalent ESM provider/layer path remains untested.

Reviewed commit 4dfe43018835cbdff184252fcdcd1afaa77e6b3f. Workflow run