Retire patch 0003 and the v0.7.0 qualification row - #185

Part of #145 (first bullet only; the SVE256 lane and #149 audit-note items are untouched).

What

• Delete carried patch 0003 (embedding-mode scheduler reserve, Qualify and repair the v0.7.0 CPU crash after enabling context embeddings #114) and its series.json entry.
• Drop the v0.7.0 row from LLAMADART_UPSTREAMS in validate_wrapper.yml.
• Tests: ci_scope real-table assertion keeps only v0.8.0; expected manifest list drops 0003; the upstream_fix retirement test (incl. CRLF and missing-source cases) now runs on 0004; the Android marker-requirement test now uses 0005's libggml-cpu.so marker.
• Docs: AGENTS.md, patches/llama.cpp/README.md, docs/v090_qualification.md, docs/v080_qualification.md updated; docs/v070_native_contracts.md notes the patch was retired.

Evidence (issue trigger: core shipped on v0.8.0)

Per docs/v090_qualification.md, 0003 applied only to the v0.7.0 row (v0.8.0+ carry upstream #31086).

Kept

• Patch 0004 and the v0.8.0 row (0004 is needed only by that row).

Validation

• python3 -m unittest discover -s tests: 449 tests OK (1 skipped)
• llama_cpp_patches.py manifest --upstream third_party/llama.cpp (v0.9.0): 0001, 0002, 0005, 0006