p2: digest with in-sift FIFO, SQLite caches, Honcho context, recover

Dixie is capped (max_inflight 2, queue_depth 8, queue_wait 20s) and
never queued on llama-server. Streaming chat, thinking off, 45s
fallback to clean. Digest and chunk-embedding caches are
content-addressed SQLite (Honcho context is not cached). Recover
uses the guarded Fetcher. guardian-star is refused in code.

vendor/modernc.org/sqlite/lib/sqlite_g_0000000000007fff.go

@@ -0,0 +1,51 @@
+// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.
+
+//go:build (darwin && amd64) || (darwin && arm64) || (freebsd && 386) || (freebsd && amd64) || (freebsd && arm) || (freebsd && arm64) || (linux && 386) || (linux && amd64) || (linux && arm) || (linux && arm64) || (linux && loong64) || (linux && ppc64le) || (linux && riscv64) || (linux && s390x) || (netbsd && amd64)
+
+package sqlite3
+
+import (
+	"modernc.org/libc"
+)
+
+const MS_INVALIDATE = 2
+
+type Tpthread_t = uintptr
+
+const __restrict = 0
+
+// C documentation
+//
+//	/*
+//	** Return the system page size.
+//	**
+//	** This function should not be called directly by other code in this file.
+//	** Instead, it should be called via macro osGetpagesize().
+//	*/
+func _unixGetpagesize(tls *libc.TLS) (r int32) {
+	return int32(libc.Xsysconf(tls, int32(_SC_PAGESIZE)))
+}
+
+/*
+** Constants used for locking
+ */
+
+type pthread_attr_t = Tpthread_attr_t
+
+type pthread_cond_t = Tpthread_cond_t
+
+type pthread_condattr_t = Tpthread_condattr_t
+
+type pthread_key_t = Tpthread_key_t
+
+type pthread_mutex_t = Tpthread_mutex_t
+
+type pthread_mutexattr_t = Tpthread_mutexattr_t
+
+type pthread_once_t = Tpthread_once_t
+
+type pthread_rwlock_t = Tpthread_rwlock_t
+
+type pthread_rwlockattr_t = Tpthread_rwlockattr_t
+
+type pthread_t = Tpthread_t