Carry project memory in the repo, with tools/memory-sync.sh

Claude Code keeps per-project memory at <home>/.claude/projects/<key>/,
where <key> is the project's absolute path with every separator and the
drive colon turned into a dash. That makes it both rename-fragile and
machine-specific, and this project has hit each of those once:

  - D:\DEV\Schunix -> D:\DEV\SchOS changed the key, and 43 memories were
    invisible until moved across by hand.
  - Development happens from Windows and from Linux, and each looks in a
    different place for the same checkout.

Committing .claude/memory/ fixes both -- git carries it across renames
and between hosts -- and `import` puts it wherever the local machine
expects. .claude/settings.local.json stays ignored: those are per-machine
permissions.

The colon maps to a dash rather than being dropped. Deleting it gives
D-DEV-SchOS, which matches nothing and silently finds zero memories; that
was the first attempt. On Git Bash the key comes from `cygpath -w`,
because Claude Code is a Windows program and sees D:\DEV\SchOS, not
/d/DEV/SchOS.

.claude/memory/MEMORY.md

@@ -0,0 +1,44 @@
+- [SchOS rename + git](schos-rename-and-git.md) — Schunix is SchOS and the kernel is SchIFT; the tree is under local git, and the two bugs the rename caused.
+- [Cross-platform build](schos-cross-platform-build.md) - Windows, Linux, macOS and BSD all build it; clang everywhere, and the four host assumptions that used to break.
+- [Memory sync](schos-memory-sync.md) - memory lives in the repo at .claude/memory/; tools/memory-sync.sh moves it between machines.
+- [Schunix build environment](schunix-build-environment.md) — builds natively on Windows with clang/lld + mingw + Git Bash; WSL is gone, and the five latent bugs the move exposed.
+- [Syscalls: one table](schunix-syscall-single-table.md) — declare in kernel/sys/table.inc only; linux_abi.c is generated, never hand-edited.
+- [Linux ABI decision](schunix-linux-abi-decision.md) — the native syscall ABI is being dropped; Linux numbering becomes the only ABI.
+- [Rewrite priorities](schunix-rewrite-priorities.md) — what actually blocks the OS, in order, plus a confirmed SMP bug in the syscall entry path.
+- [SMP and RAM-floor bugs](schunix-smp-and-memory-bugs.md) — SMP works (five bugs, and why __thread is wrong for per-CPU data); the 224 MB floor is gone.
+- [SchFS and ramdisk root](schfs-v2-and-ramdisk.md) — the agreed BeFS/ZFS/btrfs synthesis, and the completed `make ramroot` + mkfs dedup work.
+- [SchFS B-tree, phase 1](schfs-btree-phase1.md) — the CoW B-tree is built and passing; run `make schfs-test` after touching it.
+- [SchFS phase 2: real mount](schfs-phase2-mount.md) — mkschfs writes images, the kernel mounts them read-only; `make schfs-check`, plus four traps worth remembering.
+- [SchFS phase 3: writes](schfs-phase3-writes.md) — full write API, free map derived not stored, and `mount -t schfs` works; the VFS now dispatches through `struct fs_ops`.
+- [DIRSIZ 14 -> 30](schunix-dirsiz-14.md) — filenames used to truncate silently; fixed by holding the HTree bucket at 256 bytes.
+- [Linux open flags](schunix-linux-open-flags.md) — include/fcntl.h must hold Linux's values; a mismatch made `>>` truncate.
+- [Shared memory and mmap](schunix-shm-and-mmap.md) — shm + file-backed mmap work; pages you don't own must never reach kfree.
+- [Wall clock](schunix-wall-clock.md) — the RTC was never read, so `date` said 1970; kernel/core/time.c fixes it, plus the stale-image trap.
+- [TTF rasteriser](schunix-ttf-rasteriser.md) — glyf outlines (not CFF, and why); the composite-glyph trap that loses the letter "i".
+- [Text rendering](schunix-text-rendering.md) — the layer replacing the 8x16 cell grid; metrics, surfaces, coverage blending, UTF-8.
+- [Console and TTY](schunix-console-tty.md) — ANSI parser, termios, UTF-8; the font is CP437 not Latin-1, plus five bugs that masqueraded as broken commands.
+- [Build speed](schunix-build-speed.md) — no-op make is ~2s now; what made it 1m48 and the traps that would undo it.
+- [PCI and drivers](schunix-pci-drivers.md) — bus enumeration, and where a driver that finds its own hardware goes.
+- [ISO boot](schunix-iso-boot.md) — `make iso`; needs El Torito no-emulation + ATAPI because the loader never uses INT 13h.
+- [Ramdisk root sizing](schunix-ramdisk-root-sizing.md) — the "disk full" was DOOM WADs, not FSSIZE; three Makefile knobs, and why excluding them is a licensing rule.
+- [Framebuffer device](schunix-framebuffer-device.md) — /dev/fb0 is real and speaks Linux fbdev; never assume where the framebuffer lives.
+- [Crash screen](schunix-crash-screen.md) — PSOGM lives in kernel/core/panic.c; `echo c > /proc/sysrq` to trigger, `make crashshot` to photograph.
+- [QR encoder](schunix-qr-encoder.md) — kernel/core/qr.c for crash reports; `make qrcheck`, and the segno padding bug that is not ours.
+- [Boot splash and logo](schunix-boot-splash-logo.md) — the loader draws the logo, not the kernel; STAGE2_SECTORS was in five places and is now in one.
+- [SchAPI direction](schunix-schapi-direction.md) — Schunix as a macOS-shaped *system*; the stable ABI is a library, not the syscall table.
+- [Roadmap and projects/](schunix-roadmap-and-projects.md) — the agreed order through to Schcom/SchWM/SchDE; the GUI and installer live outside the OS tree.
+- [Driver infrastructure](schunix-driver-infrastructure.md) — dynamic IRQ registration, a DMA arena, PCI capabilities; PCI interrupts are level/active-low.
+- [Network stack choice](schunix-network-stack-choice.md) — don't write TCP; lwIP over FreeBSD over NetBSD, with the licence evidence.
+- [e1000 and driver layout](schunix-e1000-and-driver-layout.md) — the NIC driver, drivers/ split by device class, and virtio-gpu as the QEMU default.
+- [virtio-gpu](schunix-virtio-gpu.md) — the display class's second implementation; run with `-vga std -device virtio-gpu-pci`.
+- [Device model](schunix-device-model.md) — one bus-agnostic list at /proc/devices; bus is provenance, class is capability, and the settled Linux-driver decision.
+- [usb.ids](schunix-usb-ids.md) — shipped as /usr/share/usb.ids, BSD option of a dual licence; cached, not fetched per build.
+- [USB and xHCI](schunix-usb-xhci.md) — enumeration and control transfers work; written from the spec, because porting BSD's stack means porting newbus first.
+- [Licensing](schunix-licensing.md) — Apache-2.0, copyright Nexoniarz; BSD drivers are usable and Linux ones are not.
+- [Layout migration](schunix-layout-migration.md) — the bt/ → ports/ + lib/ + cmd/ restructure and the two Makefile traps it exposed.
+- [Verify by driving the shell](schunix-verify-by-driving-shell.md) — booting to a prompt proves nothing; run real commands over serial with paced input.
+- [/dev and /proc](schunix-devfs-procfs.md) — how both are built; ps and top work now, one cosmetic gap left.
+- [TTY foreground pgrp coupling](schunix-tty-fg-pgrp-coupling.md) — TIOCGPGRP and getpgrp() must agree or the shell spins forever; how to spot that hang.
+- [Sockets and evdev](schunix-sockets-and-evdev.md) — AF_UNIX with one table lock, /dev/input/eventN, and why keycodes need a table for USB but not PS/2.
+- [The removed acceptance test](schunix-doom-acceptance-test.md) — deleted 2026-08-08 with its trademark references; what it found and the two techniques worth keeping.
+- [Sharing preference](nexoniarz-sharing-preference.md) — never push or publish; unfinished work stays local.