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/core/error.rs

@@ -222,9 +222,9 @@ impl LoreError {
                 "Check database file permissions or reset with 'lore reset'.\n\n  Example:\n    lore doctor\n    lore reset --yes",
             ),
             Self::Http(_) => Some("Check network connection"),
-            Self::NotFound(_) => Some(
-                "Verify the entity exists.\n\n  Example:\n    lore issues\n    lore mrs",
-            ),
+            Self::NotFound(_) => {
+                Some("Verify the entity exists.\n\n  Example:\n    lore issues\n    lore mrs")
+            }
             Self::Ambiguous(_) => Some(
                 "Use -p to choose a specific project.\n\n  Example:\n    lore issues 42 -p group/project-a\n    lore mrs 99 -p group/project-b",
             ),