Phase 6: Ingest pipeline — CSV, JSON, PDF, text file support

- ingestd crate: detect file type → parse → schema detection → Parquet → catalog
- CSV: auto-detect column types (int, float, bool, string), handles $, %, commas
  Strips dollar signs from amounts, flexible row parsing, sanitized column names
- JSON: array or newline-delimited, nested object flattening (a.b.c → a_b_c)
- PDF: text extraction via lopdf, one row per page (source_file, page_number, text)
- Text/SMS: line-based ingestion with line numbers
- Dedup: SHA-256 content hash, re-ingest same file = no-op
- Gateway: POST /ingest/file multipart upload, 256MB body limit
- Schema detection per ADR-010: ambiguous types default to String
- 12 unit tests passing (CSV parsing, JSON flattening, type inference, dedup)
- Tested: messy CSV with missing data, dollar amounts, N/A values → queryable

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

crates/ingestd/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "ingestd"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+shared = { path = "../shared" }
+storaged = { path = "../storaged" }
+catalogd = { path = "../catalogd" }
+tokio = { workspace = true }
+axum = { workspace = true, features = ["multipart"] }
+lopdf = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+tracing = { workspace = true }
+arrow = { workspace = true }
+parquet = { workspace = true }
+bytes = { workspace = true }
+sha2 = { workspace = true }
+csv = { workspace = true }
+chrono = { workspace = true }
+object_store = { workspace = true }