style: Apply cargo fmt and clippy fixes across codebase

Automated formatting and lint corrections from parallel agent work:

- cargo fmt: import reordering (alphabetical), line wrapping to respect
  max width, trailing comma normalization, destructuring alignment,
  function signature reformatting, match arm formatting
- clippy (pedantic): Range::contains() instead of manual comparisons,
  i64::from() instead of `as i64` casts, .clamp() instead of
  .max().min() chains, let-chain refactors (if-let with &&),
  #[allow(clippy::too_many_arguments)] and
  #[allow(clippy::field_reassign_with_default)] where warranted
- Removed trailing blank lines and extra whitespace

No behavioral changes. All existing tests pass unmodified.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/cli/commands/generate_docs.rs

@@ -5,12 +5,12 @@ use rusqlite::Connection;
 use serde::Serialize;
 use tracing::info;
 
+use crate::Config;
 use crate::core::db::create_connection;
 use crate::core::error::Result;
 use crate::core::paths::get_db_path;
 use crate::core::project::resolve_project;
 use crate::documents::{SourceType, regenerate_dirty_documents};
-use crate::Config;
 
 const FULL_MODE_CHUNK_SIZE: i64 = 2000;
 
@@ -134,7 +134,11 @@ fn seed_dirty(
 
 /// Print human-readable output.
 pub fn print_generate_docs(result: &GenerateDocsResult) {
-    let mode = if result.full_mode { "full" } else { "incremental" };
+    let mode = if result.full_mode {
+        "full"
+    } else {
+        "incremental"
+    };
     println!(
         "{} Document generation complete ({})",
         style("done").green().bold(),
@@ -147,10 +151,7 @@ pub fn print_generate_docs(result: &GenerateDocsResult) {
     println!("  Regenerated: {}", result.regenerated);
     println!("  Unchanged:   {}", result.unchanged);
     if result.errored > 0 {
-        println!(
-            "  Errored:     {}",
-            style(result.errored).red()
-        );
+        println!("  Errored:     {}", style(result.errored).red());
     }
 }