release: v0.34.5 — Vulkan depth-only render passes

[lkmavi]

Summary

• Vulkan depth-only render passes (fix(vulkan): begin depth-only render passes instead of faulting on End #353, @dvoyni) — BeginRenderPass derives render area/sample count from the depth/stencil attachment when there are no usable color attachments; End calls vkCmdEndRenderPass only if Begin actually ran (fixes driver fault on shadow-map style passes).
• CI Dependencies job (ci: harden Dependencies job against go-mod-outdated proxy flakes #354, @lkmavi) — pin go-mod-outdated@v0.9.0, retry install, continue-on-error against transient proxy.golang.org flakes.

Docs

• CHANGELOG.md — [0.34.5] section
• ROADMAP.md — Current State → v0.34.5
• AGENTS.md — Current Version → v0.34.5 (was stale at v0.34.3)
• docs/ARCHITECTURE.md — Vulkan depth-only render pass note

Test plan

• go build ./... (darwin/arm64, linux/amd64, js/wasm)
• go test ./...
• gofmt -l . clean
• golangci-lint run --timeout=5m clean
• Ecosystem deps at latest released versions
• CI green on this PR
• Maintainer approval → squash merge → tag v0.34.5 (tag not pushed yet)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[kolkov]

Release PR validated: PATCH version correct (bugfix + CI), CHANGELOG/ROADMAP/AGENTS.md/ARCHITECTURE.md all updated, no private paths, CI 15/15 green. AGENTS.md v0.34.3→v0.34.5 jump catches our v0.34.4 miss — good catch. LGTM.