[ishtiaq156]

What and why

Apps built from extracted-folder dumps could show the dump directory name, an unknown display version and a missing icon even when original Control NCA metadata existed. For Switch 2 Editions, control/Acd_1 can contain a different, Edition-specific title and icon from the original game's control/ data.

Import existing extracted control/control.nacp and localized control/icon_*.dat into the packer's standard control.nacp and icon.jpg outputs. Prefer the Acd_1 Control identity for selected Ounce (0400) programs when available, then standard Control and existing loose metadata. Prefer the American English icon, fall back to another locale, and remove stale metadata when its source disappears. Both full packaging and the preliminary survey use the same selection.

This complements but does not duplicate #1253, which selects extracted program/<n> layouts; this PR chooses metadata after a program folder is selected. It is also separate from #1551's manual icon override. The general cause and fix are documented in the packing reference.

Checked

• Tests: 73/73 focused dump, build-folder, NUP and docs tests passed on refreshed upstream main; 74/74 nearby Mac, alias and work-folder tests passed. Eight previous CI-failing environment-switch and Xcode-workflow tests also passed. Python compilation, regenerated symptoms index and Git whitespace checks passed.
• Earlier packaging evidence: Wonder Switch 2 Edition Program 1 040015100B514001, update v327680 with Bellabel DLC v131072, used its official Acd_1 title and icon in a local Mac build. Gameplay validation for that build used a separate BFRES diagnostic overlay. This metadata-only refresh had no new game build or gameplay run.
• Device: Apple Silicon Mac mini M6, macOS 27.0.1. No shader or host-runtime changes and no broad multi-game runtime regression run.

Docs

• Recorded the general finding in docs/reference/packing.md and regenerated docs/agents/symptoms.md.
• No game files, keys or proprietary extracted data included.