Sync dev with upstream (2026-09-09)

[pathanin]

Sync dev with PathOfBuildingCommunity/PathOfBuilding-PoE2.

Merged from upstream

• fd4c1acb7 Update spec — touches src/Export/spec.lua only (31 ins / 31 del).

Clean merge, no conflicts.

macOS port

Nothing needed forward-porting. Upstream's single file has no overlap with any fork-only patch.

Fork deltas verified present after the merge:

• src/Launch.lua — jit.os == "OSX" → jit.off() block (7 lines) intact.
• src/Classes/TradeQueryRequests.lua — pseudoModLine nil guard + its marker comment intact.
• src/Classes/TradeQuery.lua — fork delta intact (14 ins / 56 del vs upstream).

Verification

• P4 global assertion: git diff --stat <pre> HEAD lists only src/Export/spec.lua. No fork-only file appears.
• P4 per-file: ground-truth git diff upstream/dev HEAD -- <file> confirms every live fork delta.
• One stale signature, benign: commit a3e01e572's processLine marker comment about the dropped {fractured}/{crafted} prefix is absent because upstream has since adopted byte-identical processLine code. The fix is in the file; it is simply no longer a fork delta. Nothing restored.
• P5: upstream added no versioned port directory this run. N/A.
• Tests: busted is not installed locally, so the suite was not run here — relying on CI run_tests / check_modcache.