Obsidian 0.3.0-phase3-dev3

What's Changed

• Record v0.0.2 Phase 0 release state by @TrissTheBoss in #2
• Phase 1: validated frame and GPU foundation by @TrissTheBoss in #3
• Phase 1: validated frame contexts and resource lifetime by @TrissTheBoss in #4
• Phase 1: validated bounded staging and upload infrastructure by @TrissTheBoss in #5
• Phase 1: validated device-preferred geometry arena and suballocator by @TrissTheBoss in #6
• Phase 1: validated frame graph and integrated GPU profiler by @TrissTheBoss in #7
• Phase 1: validated first Obsidian-owned graphics draw by @TrissTheBoss in #8
• Phase 1: validated arena-backed indexed-indirect draw by @TrissTheBoss in #9
• Phase 1: validated compute-generated indexed-indirect commands by @TrissTheBoss in #10
• Phase 1: validated GPU visibility and indirect compaction by @TrissTheBoss in #11
• Phase 2: immutable real-section snapshot and reference oracle by @TrissTheBoss in #12
• Phase 2 dev2: first drawable real section by @TrissTheBoss in #14
• Sync P2.2 completion and P2.3 handoff by @TrissTheBoss in #15
• Phase 2 dev3: texture and material identity by @TrissTheBoss in #16
• Sync P2.3 completion and P2.4 handoff by @TrissTheBoss in #18
• Phase 2 dev4: lighting and ambient occlusion correctness by @TrissTheBoss in #19
• Sync P2.4 completion and P2.5 handoff by @TrissTheBoss in #21
• Phase 2 dev5: broader opaque and cutout block semantics by @TrissTheBoss in #22
• [no-release] Synchronize P2.5 completion status by @TrissTheBoss in #24
• Phase 2 dev7: persistent multi-section scene integration by @TrissTheBoss in #27
• Phase 2 dev6: section lifecycle and rebuild correctness by @TrissTheBoss in #25
• Phase 3 dev1: bounded worker and job architecture by @TrissTheBoss in #29
• Phase 3 dev2: asynchronous scene mesh integration by @TrissTheBoss in #32
• Phase 3 dev3: scheduler, scratch reuse, and lifecycle closure evidence by @TrissTheBoss in #34

Full Changelog: v0.0.2-phase0...v0.3.0-phase3-dev3