Combined legacy D3D advertised capability corrections

Reviewed against fetched main 7ddcd0572b132759c9122c80492e9f9c161a047a. Combines cube f856627b8d6ff022c4713aabb60ea7083ed9f0fc, BORDER 0a63482c363082c95e825b34161f42134831a3a4, and FILTER b7306d49f3b68ff2fb33da978bd03e91888c1d6b plus its test cleanup 0c20d05b6b2c81a25e2660a2e40190792bf90722.

Only three production values in fill_primcaps change:

Independent review checked the SDK constants and D3DPRIMCAPS semantics against the current source paths. CUBEMAP promises cube texture resources; Surface4/7 CreateSurface rejects extended storage caps before allocation. PROJECTED is a separate bit and stays unchanged. BORDER requires border-color sampling; d3dim_address_texel handles modes 2/3 explicitly and falls through to wrap for mode 4, while lib/d3dim-gpu.js maps mode 4 to clamp. MIPNEAREST requires selecting an appropriate mip level; the software filter paths choose point/linear sampling of one image and GPU sampler lowering sets mip: 0. The filter enumeration value 3 is distinct from capability bit 4.

All legacy HAL/HEL descriptor builders and GetCaps 1/2/3 share the primitive caps. D3D7 also uses that helper, then adds 0x03000300 filter flags, so its combined filter mask is 0x030003FB. Enumeration builder wiring is checked. No renderer code or resource admission behavior changes.

The three dedicated extracted-source suites now require the combined exact primitive masks; permissive pre/post-integration alternatives and no-op "pending composition" checks were removed. The cube and BORDER suites' D3D7 filter expectations were corrected. The existing test-d3d-device-enumeration-lifetime.js callback filter expectations were also updated to 0xFB / 0x030003FB; its full-VM execution remains pending.

Validation:

• node test/test-legacy-cube-caps-contract.js: 115 checks, four mutation controls.
• node test/test-legacy-texture-remaining-caps.js: 90 address fields, 72 software address cases, GPU lowering, six negative controls.
• node test/test-legacy-texture-filter-caps.js: 90 filter fields, 36 software/GPU lowering cases, point/bilinear footprints, six negative controls.
• Each suite against the fetched-main 09a8 source fails specifically on its unsupported capability advertisement. All four changed JS tests pass syntax checks. Production diff is limited to the three advertised masks and comments.

Self-contained evidence and replay: scratch/runs/20261020-legacy-caps-combined/ contains source/compiler snapshots, baseline, logs, patch, hashes, receipt, and replay.py.

These are extracted-source tests with synthetic memory/registers and explicit fixtures, not full-VM, public COM, callback lifetime, allocation, GPU rendering or game qualification. Full-VM/render qualification remains pending. Other mip, reserved and operation bits remain unchanged and unqualified. The original single-fix documents describe their historical branch states; this document supersedes their pending-composition instructions. No runtime/build/browser/box actions, shared ledger changes or laptop work changes belong to this integration.