Remove dead code and reduce default tooltip lookahead to 1 week

Remove chime--agenda-buffer-name (unused variable) and
chime--extract-birthday-year (superseded by chime--parse-birthday).

Reduce chime-tooltip-lookahead-hours from 8760 (1 year) to 168
(1 week). The 1-year default caused org-agenda-list to scan a
365-day span every check cycle, which is slow for large org
collections. The tooltip only shows 5 events, so a week is
sufficient for most users.

3 files changed, 6 insertions, 38 deletions

diff --git a/chime.el b/chime.el
index 3e0c734..9f3e651 100644
--- a/chime.el
+++ b/chime.el
@@ -373,16 +373,17 @@ When nil (default), left-click does nothing."
   :type '(choice (const :tag "No calendar URL" nil)
                  (string :tag "Calendar URL")))
 
-(defcustom chime-tooltip-lookahead-hours 8760
+(defcustom chime-tooltip-lookahead-hours 168
   "Hours ahead to look for events in tooltip.
 Separate from modeline lookahead window.
-Default is 8760 hours (1 year), showing all future events.
+Default is 168 hours (1 week).
 The actual number of events shown is limited by
 `chime-modeline-tooltip-max-events'.
 
-Set to a smaller value to limit tooltip by time as well as count.
-Example: Set to 24 to show only today's and tomorrow's events,
-or keep at default to show next N events regardless of distance."
+Set to a larger value (e.g., 8760 for 1 year) to see distant events,
+or smaller (e.g., 24) for just today and tomorrow.
+Note: larger values increase the org-agenda-list span in the async
+subprocess, which may slow event checks for large org collections."
   :package-version '(chime . "0.6.0")
   :group 'chime
   :type '(integer :tag "Hours"))
@@ -587,8 +588,6 @@ Set to t to enable debug functions:
   "Count of consecutive async check failures.
 After `chime-max-consecutive-failures' failures, a warning is displayed.")
 
-(defvar chime--agenda-buffer-name "*chime-agenda*"
-  "Name for temporary \\='org-agenda\\=' buffer.")
 
 (defvar chime--last-check-time (seconds-to-time 0)
   "Last time checked for events.")
diff --git a/convert-org-contacts-birthdays.el b/convert-org-contacts-birthdays.el
index eea79a8..373613a 100644
--- a/convert-org-contacts-birthdays.el
+++ b/convert-org-contacts-birthdays.el
@@ -63,15 +63,6 @@
 
 (require 'org)
 
-(defun chime--extract-birthday-year (birthday-string)
-  "Extract year from BIRTHDAY-STRING, handling various formats.
-Returns nil if no year is present or if year should be ignored.
-Handles formats like:
-  2000-03-15
-  03-15
-  1985-12-25"
-  (when (string-match "^\\([0-9]\\{4\\}\\)-[0-9]\\{2\\}-[0-9]\\{2\\}$" birthday-string)
-    (string-to-number (match-string 1 birthday-string))))
 
 (defun chime--parse-birthday (birthday-string)
   "Parse BIRTHDAY-STRING into (YEAR MONTH DAY) list.
diff --git a/tests/test-convert-org-contacts-birthdays.el b/tests/test-convert-org-contacts-birthdays.el
index 3e3c7df..df30870 100644
--- a/tests/test-convert-org-contacts-birthdays.el
+++ b/tests/test-convert-org-contacts-birthdays.el
@@ -279,28 +279,6 @@
         (dolist (file (directory-files (file-name-directory temp-file) t (regexp-quote (file-name-nondirectory backup))))
           (delete-file file))))))
 
-;;; Tests for year extraction
-
-(ert-deftest test-convert-normal-extract-birthday-year-with-year-returns-year ()
-  "Test extracting year from YYYY-MM-DD returns the year."
-  (let ((result (chime--extract-birthday-year "2000-03-15")))
-    (should (equal result 2000))))
-
-(ert-deftest test-convert-normal-extract-birthday-year-without-year-returns-nil ()
-  "Test extracting year from MM-DD returns nil."
-  (let ((result (chime--extract-birthday-year "03-15")))
-    (should (null result))))
-
-(ert-deftest test-convert-boundary-extract-birthday-year-very-old-date-returns-year ()
-  "Test extracting year from very old date (1900s) returns the year."
-  (let ((result (chime--extract-birthday-year "1920-01-01")))
-    (should (equal result 1920))))
-
-(ert-deftest test-convert-boundary-extract-birthday-year-future-date-returns-year ()
-  "Test extracting year from future date returns the year."
-  (let ((result (chime--extract-birthday-year "2100-12-31")))
-    (should (equal result 2100))))
-
 ;;; Edge Case Tests
 
 (ert-deftest test-convert-edge-duplicate-timestamps-not-added ()