BFpilot v0.3.1 Test Build 7 Search

Test build for BFpilot search/indexing work.

Changes:

• Adds indexed search to the file manager UI.
• Adds Index All for user/storage roots.
• Adds Index System for broader system-file crawling.
• Adds search status, cancel, stale tracking, and absolute-path search results.
• Keeps launcher/AppInst imports isolated from the main payload.
• Includes current archive extraction performance work in this build.

Validation:

• Built all ELF artifacts with PS5_PAYLOAD_SDK=C:/Users/Blurf/ps5sdk.
• assets/files.html JavaScript syntax check passed.
• mingw32-make inspect-imports passed.

Notes:

• This is a prerelease test build.
• Index System is intentionally broad; use Cancel if it is too slow or hits many inaccessible paths.
• PS5 hardware smoke testing still needs to be run on-console.