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_000000000000403c.go

@@ -0,0 +1,55 @@
+// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.
+
+//go:build (freebsd && 386) || (freebsd && amd64) || (freebsd && arm) || (freebsd && arm64) || (netbsd && amd64)
+
+package sqlite3
+
+const AT_EACCESS = 256
+
+const AT_REMOVEDIR = 2048
+
+const AT_SYMLINK_NOFOLLOW = 512
+
+const CLOCK_PROF = 2
+
+const CLOCK_VIRTUAL = 1
+
+const EIDRM = 82
+
+const ENOMSG = 83
+
+const MAP_ALIGNMENT_SHIFT = 24
+
+const RTLD_NOLOAD = 8192
+
+const SF_SNAPSHOT = 2097152
+
+type Tlwpid_t = int32
+
+type Tpthread_key_t = int32
+
+type Tsigset_t = struct {
+	F__bits [4]t__uint32_t
+}
+
+const _POSIX_ASYNCHRONOUS_IO = 200112
+
+const _POSIX_CPUTIME = 200112
+
+const _POSIX_MESSAGE_PASSING = 200112
+
+const _POSIX_THREAD_CPUTIME = 200112
+
+const _POSIX_THREAD_PRIO_PROTECT = 200112
+
+const _POSIX_TIMERS = 200112
+
+const _SC_PHYS_PAGES = 121
+
+type bintime = Tbintime
+
+type lwpid_t = Tlwpid_t
+
+type mqd_t = Tmqd_t
+
+const st_birthtimespec = 0