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_0000000000011b30.go

@@ -0,0 +1,53 @@
+// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.
+
+//go:build (freebsd && arm) || (freebsd && arm64) || (linux && arm) || (linux && arm64) || (linux && ppc64le) || (linux && riscv64) || (openbsd && arm64)
+
+package sqlite3
+
+import (
+	"unsafe"
+
+	"modernc.org/libc"
+)
+
+// C documentation
+//
+//	/*
+//	** Compute the Hour, Minute, and Seconds from the julian day number.
+//	*/
+func _computeHMS(tls *libc.TLS, p uintptr) {
+	var day_min, day_ms int32
+	_, _ = day_min, day_ms /* milliseconds, minutes into the day */
+	if (*TDateTime)(unsafe.Pointer(p)).FvalidHMS != 0 {
+		return
+	}
+	_computeJD(tls, p)
+	day_ms = int32(((*TDateTime)(unsafe.Pointer(p)).FiJD + libc.Int64FromInt32(43200000)) % libc.Int64FromInt32(86400000))
+	(*TDateTime)(unsafe.Pointer(p)).Fs = float64(day_ms%libc.Int32FromInt32(60000)) / float64(1000)
+	day_min = day_ms / int32(60000)
+	(*TDateTime)(unsafe.Pointer(p)).Fm = day_min % int32(60)
+	(*TDateTime)(unsafe.Pointer(p)).Fh = day_min / int32(60)
+	libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(0), 0, 0x1)
+	(*TDateTime)(unsafe.Pointer(p)).FvalidHMS = uint8(1)
+}
+
+// C documentation
+//
+//	/*
+//	** Set the time to the current time reported by the VFS.
+//	**
+//	** Return the number of errors.
+//	*/
+func _setDateTimeToCurrent(tls *libc.TLS, context uintptr, p uintptr) (r int32) {
+	(*TDateTime)(unsafe.Pointer(p)).FiJD = _sqlite3StmtCurrentTime(tls, context)
+	if (*TDateTime)(unsafe.Pointer(p)).FiJD > 0 {
+		(*TDateTime)(unsafe.Pointer(p)).FvalidJD = uint8(1)
+		libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(1), 3, 0x8)
+		libc.SetBitFieldPtr8Uint32(p+44, libc.Uint32FromInt32(0), 4, 0x10)
+		_clearYMD_HMS_TZ(tls, p)
+		return 0
+	} else {
+		return int32(1)
+	}
+	return r
+}