📚 docs: add missing READMEs and align crates with Rust rules

- Create README.md for paracas-daemon and paracas-estimate
- Add #![doc = include_str!("../README.md")] to daemon/estimate lib.rs
- Add missing Cargo.toml metadata (docs.rs, authors, keywords, categories)
- Reorder workspace dependencies by line length per style guide
- Document background jobs, download-all, status, and job commands

crates/paracas-lib/README.md

@@ -51,6 +51,11 @@ This is a facade crate that re-exports functionality from:
 - `paracas-aggregate` - OHLCV aggregation
 - `paracas-format` - Output formatters
 
+Related workspace crates (not re-exported):
+
+- `paracas-daemon` - Background job management
+- `paracas-estimate` - Download size estimation
+
 ## License
 
 MIT License - see [LICENSE](../../LICENSE) for details.