feat(pipeline): add POST /ingest-raw for direct batch ingestion without LLM

Allows callers to provide pre-structured RawPage data directly, bypassing the
LLM extraction step. The pipeline still handles slug computation, frontmatter,
link canonicalization, source back-references, and dedup — only the extraction
is skipped. Useful when a more capable model or manual curation produces the
structured data.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ingestion/internal/api/handler.go

@@ -272,6 +272,48 @@ func (h *Handler) IngestPath(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, ingestResponse{Pages: allPages, Warnings: allWarnings})
 }
 
+type ingestRawRequest struct {
+	Source string             `json:"source"`
+	Pages  []pipeline.RawPage `json:"pages"`
+	DryRun bool               `json:"dry_run"`
+}
+
+// IngestRaw handles POST /ingest-raw — run the pipeline on pre-parsed RawPages,
+// skipping the LLM extraction step. Use when the caller has already produced
+// structured page data (e.g. from a more capable model or manual curation).
+func (h *Handler) IngestRaw(w http.ResponseWriter, r *http.Request) {
+	var req ingestRawRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON")
+		return
+	}
+	if strings.TrimSpace(req.Source) == "" {
+		writeError(w, http.StatusBadRequest, "source is required")
+		return
+	}
+	if len(req.Pages) == 0 {
+		writeError(w, http.StatusBadRequest, "pages is required and must be non-empty")
+		return
+	}
+
+	result, err := pipeline.RunRaw(h.brainDir, req.Source, req.Pages, req.DryRun)
+	if err != nil {
+		h.logger.Error("ingest-raw failed", "source", req.Source, "err", err)
+		writeError(w, http.StatusInternalServerError, "ingest error")
+		return
+	}
+
+	pages := result.Pages
+	if pages == nil {
+		pages = []string{}
+	}
+	warnings := result.Warnings
+	if warnings == nil {
+		warnings = []string{}
+	}
+	writeJSON(w, ingestResponse{Pages: pages, Warnings: warnings})
+}
+
 // BackfillRefs handles POST /backfill-refs — injects source back-references
 // into all concept and entity pages based on existing wiki/sources/ pages.
 func (h *Handler) BackfillRefs(w http.ResponseWriter, r *http.Request) {