restore lost packages from 0.2.3 + fix overwritten 0.2.4 files

- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.)
- Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber)
- Restore 20+ local/scripts (audit, lint, test, build helpers)
- Restore src/cook/scheduler.rs, status.rs, gnu-config/
- Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh
- Recover TLC source from HEAD (was overwritten by 0.2.3 checkout)
- Recover 11 local/docs plans from HEAD (were overwritten)
- Recover qt6-wayland-smoke symlink from HEAD
- Fix MOTD: remove garbled ASCII art, use clean text
- Update version: 0.2.0 -> 0.2.4 in os-release, motd, config
- Reduce filesystem_size: 1536 -> 512 MiB
- Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages
- Reduce pcid scheme log verbosity: info -> debug

local/recipes/gpu/amdgpu-source/include/linux/bit_spinlock.h

@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_BIT_SPINLOCK_H
+#define __LINUX_BIT_SPINLOCK_H
+
+#include <linux/kernel.h>
+#include <linux/preempt.h>
+#include <linux/atomic.h>
+#include <linux/bug.h>
+
+#include <asm/processor.h>  /* for cpu_relax() */
+
+/*
+ * For static context analysis, we need a unique token for each possible bit
+ * that can be used as a bit_spinlock. The easiest way to do that is to create a
+ * fake context that we can cast to with the __bitlock(bitnum, addr) macro
+ * below, which will give us unique instances for each (bit, addr) pair that the
+ * static analysis can use.
+ */
+context_lock_struct(__context_bitlock) { };
+#define __bitlock(bitnum, addr) (struct __context_bitlock *)(bitnum + (addr))
+
+/*
+ *  bit-based spin_lock()
+ *
+ * Don't use this unless you really need to: spin_lock() and spin_unlock()
+ * are significantly faster.
+ */
+static __always_inline void bit_spin_lock(int bitnum, unsigned long *addr)
+	__acquires(__bitlock(bitnum, addr))
+{
+	/*
+	 * Assuming the lock is uncontended, this never enters
+	 * the body of the outer loop. If it is contended, then
+	 * within the inner loop a non-atomic test is used to
+	 * busywait with less bus contention for a good time to
+	 * attempt to acquire the lock bit.
+	 */
+	preempt_disable();
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+	while (unlikely(test_and_set_bit_lock(bitnum, addr))) {
+		preempt_enable();
+		do {
+			cpu_relax();
+		} while (test_bit(bitnum, addr));
+		preempt_disable();
+	}
+#endif
+	__acquire(__bitlock(bitnum, addr));
+}
+
+/*
+ * Return true if it was acquired
+ */
+static __always_inline int bit_spin_trylock(int bitnum, unsigned long *addr)
+	__cond_acquires(true, __bitlock(bitnum, addr))
+{
+	preempt_disable();
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+	if (unlikely(test_and_set_bit_lock(bitnum, addr))) {
+		preempt_enable();
+		return 0;
+	}
+#endif
+	__acquire(__bitlock(bitnum, addr));
+	return 1;
+}
+
+/*
+ *  bit-based spin_unlock()
+ */
+static __always_inline void bit_spin_unlock(int bitnum, unsigned long *addr)
+	__releases(__bitlock(bitnum, addr))
+{
+#ifdef CONFIG_DEBUG_SPINLOCK
+	BUG_ON(!test_bit(bitnum, addr));
+#endif
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+	clear_bit_unlock(bitnum, addr);
+#endif
+	preempt_enable();
+	__release(__bitlock(bitnum, addr));
+}
+
+/*
+ *  bit-based spin_unlock()
+ *  non-atomic version, which can be used eg. if the bit lock itself is
+ *  protecting the rest of the flags in the word.
+ */
+static __always_inline void __bit_spin_unlock(int bitnum, unsigned long *addr)
+	__releases(__bitlock(bitnum, addr))
+{
+#ifdef CONFIG_DEBUG_SPINLOCK
+	BUG_ON(!test_bit(bitnum, addr));
+#endif
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+	__clear_bit_unlock(bitnum, addr);
+#endif
+	preempt_enable();
+	__release(__bitlock(bitnum, addr));
+}
+
+/*
+ * Return true if the lock is held.
+ */
+static inline int bit_spin_is_locked(int bitnum, unsigned long *addr)
+{
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+	return test_bit(bitnum, addr);
+#elif defined CONFIG_PREEMPT_COUNT
+	return preempt_count();
+#else
+	return 1;
+#endif
+}
+
+#endif /* __LINUX_BIT_SPINLOCK_H */
+