fix: implement streak calculation logic

Author: programmersd21

CHANGELOG.md

@@ -5,6 +5,28 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.6.4] (2026-05-12)
+
+### Fixed
+
+* **Dynamic Stats Streaks**: Replaced hard-coded stats streak values with streaks computed directly from completed task history.
+
+  * Multiple task completions on the same calendar day are now deduplicated correctly.
+  * Longest streaks are now accurately calculated from consecutive completion days.
+  * Current streaks remain active if the last completion occurred today or yesterday, preventing premature resets.
+  * Stale streaks now correctly reset instead of displaying outdated values.
+* **Current Streak Accuracy**: Prevented the stats dashboard from incorrectly displaying `0` before the user completes a task for the current day.
+
+### Added
+
+* **Focused Streak Tests**:
+
+  * Added coverage for empty task lists.
+  * Added tests for duplicate completions on a single day.
+  * Added validation for yesterday-ending active streaks.
+  * Added stale streak reset verification.
+  * Added tests distinguishing longest streak behavior from current streak behavior.
+
 ## [1.6.3] (2026-05-10)
 
 ### Fixed

VERSION.txt

@@ -1 +1 @@
-1.6.3
+1.6.4

internal/lua/engine.go

@@ -61,7 +61,7 @@ func (e *Engine) SetupKairoAPI(L *lua.LState) {
 	L.SetField(kairo, "notify", L.NewFunction(e.luaNotify))
 
 	// Meta
-	L.SetField(kairo, "version", lua.LString("1.6.3"))
+	L.SetField(kairo, "version", lua.LString("1.6.4"))
 
 	// Set as global
 	L.SetGlobal("kairo", kairo)