PAL file stat metadata

• Type: feature
• Track: B
• Status: done
• Owner: Codex
• Opened: 2026-06-21
• Relation: Follow-up from feature-sys-getdents; blocks full compact/tile metadata in feature-demo-file-browser.

Problem

SysUtils.GetDirectoryContents can now return entry names and directory flags from getdents64, but it cannot report file sizes or timestamps. The file browser therefore renders names and [D] markers only; its compact view cannot show size/date and preview code cannot cheaply decide file classes from metadata.

Direction

• Add a PAL stat surface, preferably PalStatAt/PalFStatAt or statx, with POSIX raw-syscall backing and unsupported stubs for platforms without it.
• Expose at least size, mode/type, and modification time in an RTL-friendly record.
• Thread size into TFileInfo.Size instead of the current -1 placeholder.

Acceptance

• A library regression creates a file of known size and a directory, stats both, and verifies size/type through the PAL/SysUtils layer.
• examples/fm/fm.pas compact output can show a deterministic file size column.

Log

• 2026-06-21 — Opened while implementing the first file-browser/getdents slice.
• 2026-06-21 — Claimed as part of the resumed PAL slice. Source now exposes TPalFileStat, PalStat, and PalStatAt; POSIX uses Linux statx, ESP returns unsupported with cleared output, and SysUtils.GetDirectoryContents fills size/type/mtime when metadata is available.
• 2026-06-21 — Validation with pinned compiler v32: tools/library_suite.sh green and make lib-test both pass. test/lib_directory.pas now checks directory-list file size plus direct PalStat file/dir metadata.
• 2026-06-22 — DONE. Commit pending in uncommitted working tree. Regression: pinned v32 tools/library_suite.sh green, make lib-test, and tools/progress.sh check.