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_0000000000004003.go

@@ -0,0 +1,86 @@
+// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.
+
+//go:build (darwin && amd64) || (darwin && arm64) || (netbsd && amd64)
+
+package sqlite3
+
+const CHARCLASS_NAME_MAX = 14
+
+const COLL_WEIGHTS_MAX = 2
+
+const ENOATTR = 93
+
+const EXPR_NEST_MAX = 32
+
+const FP_NAN = 1
+
+const GID_MAX = 2147483647
+
+const LINE_MAX = 2048
+
+const LINK_MAX = 32767
+
+const MAP_NORESERVE = 64
+
+const MAP_RENAME = 32
+
+const NGROUPS_MAX = 16
+
+const NZERO = 20
+
+const PATH_MAX = 1024
+
+const PIPE_BUF = 512
+
+const RE_DUP_MAX = 255
+
+const TIOCGSIZE = "TIOCGWINSZ"
+
+const TIOCSSIZE = "TIOCSWINSZ"
+
+type Texception = struct {
+	Ftype1  int32
+	Fname   uintptr
+	Farg1   float64
+	Farg2   float64
+	Fretval float64
+}
+
+type Tidtype_t = int32
+
+type Tkauth_cred_t = uintptr
+
+type Tswblk_t = int32
+
+type Tttysize = struct {
+	Fts_lines uint16
+	Fts_cols  uint16
+	Fts_xxx   uint16
+	Fts_yyy   uint16
+}
+
+const UID_MAX = 2147483647
+
+const X_TLOSS = 0
+
+const _POSIX2_VERSION = 200112
+
+const _POSIX_THREAD_KEYS_MAX = 128
+
+const _P_ALL = 0
+
+const _P_PID = 1
+
+type exception = Texception
+
+type idtype_t = Tidtype_t
+
+type kauth_cred_t = Tkauth_cred_t
+
+type stack_t = Tstack_t
+
+type swblk_t = Tswblk_t
+
+type t__sFILE = TFILE
+
+type ttysize = Tttysize