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_000000000001803c.go

@@ -0,0 +1,117 @@
+// 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) || (openbsd && amd64) || (openbsd && arm64)
+
+package sqlite3
+
+const CLOCK_UPTIME = 5
+
+const FP_ILOGB0 = -2147483647
+
+const FP_NAN = 2
+
+const FP_SUBNORMAL = 8
+
+const FP_ZERO = 16
+
+const IOC_DIRMASK = 3758096384
+
+const O_DIRECTORY = 131072
+
+const RTLD_TRACE = 512
+
+const _POSIX2_CHAR_TERM = 1
+
+const _POSIX2_C_DEV = -1
+
+const _POSIX2_LOCALEDEF = -1
+
+const _POSIX_MEMLOCK_RANGE = 200112
+
+const _POSIX_SEMAPHORES = 200112
+
+const _POSIX_TIMEOUTS = 200112
+
+const _POSIX_VDISABLE = 255
+
+const _XOPEN_ENH_I18N = -1
+
+const _XOPEN_UNIX = -1
+
+const __BOOL_WIDTH__ = 8
+
+const __BSD_VISIBLE = 1
+
+const __DBL_MIN__ = 0
+
+const __POSIX_VISIBLE = 202405
+
+const __clang_major__ = 19
+
+const __clang_minor__ = 1
+
+const __clang_patchlevel__ = 7
+
+type dl_info = Tdl_info
+
+type t__blkcnt_t = int64
+
+type t__blksize_t = int32
+
+type t__clockid_t = int32
+
+type t__double_t = float64
+
+type t__fixpt_t = uint32
+
+type t__ino_t = uint64
+
+type t__int_fast16_t = int32
+
+type t__int_fast32_t = int32
+
+type t__int_fast64_t = int64
+
+type t__int_fast8_t = int32
+
+type t__int_least16_t = int16
+
+type t__int_least32_t = int32
+
+type t__int_least64_t = int64
+
+type t__int_least8_t = int8
+
+type t__intmax_t = int64
+
+type t__rune_t = int32
+
+type t__uint_fast16_t = uint32
+
+type t__uint_fast32_t = uint32
+
+type t__uint_fast64_t = uint64
+
+type t__uint_fast8_t = uint32
+
+type t__uint_least16_t = uint16
+
+type t__uint_least32_t = uint32
+
+type t__uint_least64_t = uint64
+
+type t__uint_least8_t = uint8
+
+type t__uintmax_t = uint64
+
+type t__useconds_t = uint32
+
+type t__wint_t = int32
+
+type tm = Ttm
+
+/*
+** The MSVC CRT on Windows CE may not have a localtime() function.
+** So declare a substitute.  The substitute function itself is
+** defined in "os_win.c".
+ */