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_0000000000018028.go

@@ -0,0 +1,39 @@
+// Code generated by modernc.org/undup from the per-target sqlite_*.go files; DO NOT EDIT.
+
+//go:build (freebsd && amd64) || (freebsd && arm64) || (openbsd && amd64) || (openbsd && arm64)
+
+package sqlite3
+
+const __INT_FAST64_FMTd__ = "ld"
+
+const __INT_FAST64_FMTi__ = "li"
+
+const __INT_LEAST64_FMTd__ = "ld"
+
+const __INT_LEAST64_FMTi__ = "li"
+
+const __UINT_FAST64_FMTX__ = "lX"
+
+const __UINT_FAST64_FMTo__ = "lo"
+
+const __UINT_FAST64_FMTu__ = "lu"
+
+const __UINT_FAST64_FMTx__ = "lx"
+
+const __UINT_LEAST64_FMTX__ = "lX"
+
+const __UINT_LEAST64_FMTo__ = "lo"
+
+const __UINT_LEAST64_FMTu__ = "lu"
+
+const __UINT_LEAST64_FMTx__ = "lx"
+
+type t__key_t = int64
+
+type t__ptrdiff_t = int64
+
+type t__size_t = uint64
+
+type t__ssize_t = int64
+
+type t__suseconds_t = int64