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_000000000000403f.go

@@ -0,0 +1,56 @@
+// 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) || (netbsd && amd64)
+
+package sqlite3
+
+const EOVERFLOW = 84
+
+const MAP_HASSEMAPHORE = 512
+
+const S_IFWHT = 57344
+
+const TMP_MAX = 308915776
+
+type Tin_addr_t = uint32
+
+type Tin_port_t = uint16
+
+type Tqaddr_t = uintptr
+
+const __SALC = 16384
+
+const __SAPP = 256
+
+const __SEOF = 32
+
+const __SERR = 64
+
+const __SLBF = 1
+
+const __SMBF = 128
+
+const __SMOD = 8192
+
+const __SNBF = 2
+
+const __SNPT = 2048
+
+const __SOFF = 4096
+
+const __SOPT = 1024
+
+const __SRD = 4
+
+const __SRW = 16
+
+const __SSTR = 512
+
+const __SWR = 8
+
+type qaddr_t = Tqaddr_t
+
+type t__sbuf = struct {
+	F_base uintptr
+	F_size int32
+}