feat(web): éditeur de périodes modifiables dans les réglages

La page Réglages permet maintenant de créer, modifier et supprimer ses propres périodes (profils) : nom, travail, pause courte, pause longue et nombre de cycles, avec bouton radio ★ pour choisir la période active. Enregistrement via profiles_json + active_profile (index). Repli automatique sur la première période si l'active est supprimée ; noms vides/doublons ignorés. La page Aide affiche le tableau des périodes réelles de la configuration. Tests : parsing, édition, repli du profil actif et intégration HTTP.

tests/test_webserver.nim

@@ -43,8 +43,11 @@ suite "applySettings":
   test "applies a full form":
     let base = defaultConfig()
     let form = parseForm("workMin=40&shortBreakMin=8&longBreakMin=20&" &
-      "cyclesBeforeLongBreak=5&dailyGoal=6&lang=en&activeProfile=Sprint&" &
-      "soundEnabled=on&doNotDisturb=on&" &
+      "cyclesBeforeLongBreak=5&dailyGoal=6&lang=en&" &
+      "active_profile=1&" &
+      "profiles_json=" & encodeUrl(
+        """[{"name":"Focus","workMin":30,"shortBreakMin":6,"longBreakMin":18,"cycles":4},{"name":"Rapide","workMin":10,"shortBreakMin":2,"longBreakMin":5,"cycles":3}]""") &
+      "&soundEnabled=on&doNotDisturb=on&" &
       "reminders_json=" & encodeUrl("""[{"text":"Boire de l'eau","enabled":true}]"""))
     let cfg = applySettings(base, form)
     check cfg.workMin == 40
@@ -53,16 +56,43 @@ suite "applySettings":
     check cfg.cyclesBeforeLongBreak == 5
     check cfg.dailyGoal == 6
     check cfg.lang == "en"
-    check cfg.activeProfile == "Sprint"
+    check cfg.profiles.len == 2
+    check cfg.profiles[0].name == "Focus"
+    check cfg.profiles[1].workMin == 10
+    check cfg.activeProfile == "Rapide"
     check cfg.soundEnabled
     check cfg.doNotDisturb
     check not cfg.autoStart
     check cfg.healthReminders.len == 1
     check cfg.healthReminders[0].text == "Boire de l'eau"
 
+  test "profiles are edited and active profile falls back safely":
+    let base = defaultConfig()
+    # Deux périodes, active = index 1.
+    let f1 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"A","workMin":25,"shortBreakMin":5,"longBreakMin":15,"cycles":4},{"name":"B","workMin":50,"shortBreakMin":10,"longBreakMin":20,"cycles":5}]""") &
+      "&active_profile=1")
+    let c1 = applySettings(base, f1)
+    check c1.profiles.len == 2
+    check c1.activeProfile == "B"
+    # Index hors limites (période active supprimée) : repli sur la première.
+    let f2 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"C","workMin":20,"shortBreakMin":4,"longBreakMin":10,"cycles":3}]""") &
+      "&active_profile=5")
+    let c2 = applySettings(base, f2)
+    check c2.profiles.len == 1
+    check c2.activeProfile == "C"
+    # Noms vides et doublons ignorés.
+    let f3 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"","workMin":1,"shortBreakMin":1,"longBreakMin":1,"cycles":1},{"name":"D","workMin":33,"shortBreakMin":3,"longBreakMin":9,"cycles":2},{"name":"D","workMin":99,"shortBreakMin":9,"longBreakMin":27,"cycles":9}]"""))
+    let c3 = applySettings(base, f3)
+    check c3.profiles.len == 1
+    check c3.profiles[0].name == "D"
+    check c3.profiles[0].workMin == 33
+
   test "invalid values fall back to current ones":
     let base = defaultConfig()
-    let form = parseForm("workMin=abc&lang=zz&activeProfile=Inexistant")
+    let form = parseForm("workMin=abc&lang=zz&active_profile=99")
     let cfg = applySettings(base, form)
     check cfg.workMin == base.workMin
     check cfg.lang == "auto"
@@ -78,6 +108,8 @@ suite "rendering":
     check "Réglages" in renderSettings(cfg)
     check "name='workMin'" in renderSettings(cfg)
     check "reminders_json" in renderSettings(cfg)
+    check "profiles_json" in renderSettings(cfg)
+    check "active_profile" in renderSettings(cfg)
 
 suite "integration (local HTTP server)":
   test "GET routes work and settings POST persists":
@@ -109,8 +141,10 @@ suite "integration (local HTTP server)":
 
     # Sauvegarde via POST (comme le ferait le navigateur).
     let body = "workMin=33&shortBreakMin=6&longBreakMin=18&cyclesBeforeLongBreak=4&" &
-      "dailyGoal=5&lang=fr&activeProfile=Classique&" &
-      "reminders_json=" & encodeUrl(
+      "dailyGoal=5&lang=fr&active_profile=1&" &
+      "profiles_json=" & encodeUrl(
+        """[{"name":"Zen","workMin":35,"shortBreakMin":7,"longBreakMin":20,"cycles":4},{"name":"Bolt","workMin":5,"shortBreakMin":1,"longBreakMin":3,"cycles":2}]""") &
+      "&reminders_json=" & encodeUrl(
         """[{"text":"Étire-toi","enabled":true},{"text":"Bois de l'eau","enabled":false}]""")
     let resp = client.postContent(base & "/settings", body)
     check "Réglages enregistrés" in resp
@@ -120,6 +154,10 @@ suite "integration (local HTTP server)":
     check saved.workMin == 33
     check saved.dailyGoal == 5
     check saved.lang == "fr"
+    check saved.profiles.len == 2
+    check saved.profiles[0].name == "Zen"
+    check saved.profiles[1].workMin == 5
+    check saved.activeProfile == "Bolt"
     check saved.healthReminders.len == 2
     check saved.healthReminders[1].enabled == false