fix: detect B0F edge spots across full tile

[killeress]

What changed

• B0F AOI bright-spot inference now evaluates the complete 512x512 tile.
• B0F no longer uses the panel polygon for effective-range rejection, inward ROI movement, or tile masking; polygon remains only for approximate AOI center mapping.
• W0F/WGF and other PatchCore lighting paths are unchanged.
• Added an edge regression covering a 380 px bright component outside the polygon but inside the B0F tile.

Root cause

An inaccurate panel polygon mask removed valid extreme-edge pixels before connected-component filtering, turning the formal result into OK while the unmasked debug path found NG.

Validation

• 69 focused v2/AOI/tile tests passed.
• Python compile check passed.
• git diff --check passed.
• Code-only ZIP deployment/patchcore_ai_release_2026.08.18.1_codeonly.zip verified: 89 entries, 88 checksum records, package_type=codeonly, source_mode=git_commit, git_dirty=false, no credentials or excluded asset directories.