Initial commit: The Daily EPUB full implementation

Full implementation of a personalized daily newspaper delivered as an
EPUB.

Articles are pulled from a local self-hosted Miniflux instance, enriched
with comments, summarized and filtered by DeepSeek AI, and then
assembled into two EPUB editions: standard and optimized for the Xteink
X4 e-ink reader. Both are served by the local self-hosted BookOrbit OPDS
server in a separate library. Then the X4 edition is futher converted to
XTC format and served over a separate OPDS server hosted by the Rust
binary. Runs are tracked in a local SQLite database so runs are
idempotent per date.

Full documentation of the plan is in docs/plans and setup and install
instructions are in the README.md file.

src/lib.rs

@@ -0,0 +1,34 @@
+//! `daily-epub` — a personalized daily newspaper as an EPUB (spec §1, §2).
+//!
+//! The crate ships both a library and a thin `daily-epub` binary. Everything the
+//! pipeline does lives here so that integration tests can drive the stages
+//! directly (see `tests/e2e_pipeline.rs`) instead of shelling out to the binary.
+//!
+//! Pipeline order (spec §2), all of it wired in [`crate::pipeline`]:
+//!
+//! ```text
+//! Miniflux ingest → dedupe → extraction → persist → social enrichment
+//!   → pre-filter → LLM scoring → selection → comments → world briefing
+//!   → editorial → EPUB build (standard + X4) → XTC → publish → report
+//! ```
+
+pub mod auth;
+pub mod comments;
+pub mod config;
+pub mod curate;
+pub mod db;
+pub mod dedupe;
+pub mod epub;
+pub mod extract;
+pub mod http;
+pub mod miniflux;
+pub mod pipeline;
+pub mod publish;
+pub mod report;
+pub mod server;
+pub mod social;
+pub mod types;
+pub mod world;
+
+/// `CARGO_PKG_VERSION`, printed in the colophon and the OPDS generator tag.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");