feat(ownership): complete ownership intelligence module

Sprints 0-8: Types, schema, KSEI parser, entity resolution, DB CRUD,
Bing API client, import pipeline, query commands, graph traversal,
changes diff, entity resolution CLI, FTS5 search.

- KSEI PDF parser (mutool stext + quick-xml, 99.2% accuracy)
- 7 query commands: ticker, entity, search, cross-holders, concentration, flow, releases
- Ownership graph with recursive CTE (ASCII tree + Graphviz DOT)
- Release diff/changes between KSEI snapshots
- Entity resolution CLI: unresolved, map, merge
- FTS5 trigram search on entity names
- Feature-gated under 'ownership' (default-on)
- 82 tests passing

Cargo.toml

@@ -9,6 +9,10 @@ homepage = "https://github.com/0xrsydn/idx-cli"
 keywords = ["idx", "stocks", "indonesia", "cli", "finance"]
 categories = ["command-line-utilities", "finance"]
 
+[features]
+default = ["ownership"]
+ownership = ["dep:rusqlite", "dep:quick-xml", "dep:sha2"]
+
 [dependencies]
 clap = { version = "4", features = ["derive"] }
 clap_complete = "4"
@@ -22,6 +26,9 @@ directories = "5"
 chrono = { version = "0.4", features = ["serde"] }
 thiserror = "2"
 fastrand = "2"
+rusqlite = { version = "0.32", features = ["bundled-full"], optional = true }
+quick-xml = { version = "0.37", optional = true }
+sha2 = { version = "0.10", optional = true }
 
 [dev-dependencies]
 assert_cmd = "2"