diff --git a/.planning/STATE.md b/.planning/STATE.md
index 3033de9..256fdc8 100644
--- a/.planning/STATE.md
+++ b/.planning/STATE.md
@@ -5,16 +5,16 @@ milestone_name: milestone
 current_phase: 08
 current_phase_name: dashboard-widgets-vollimplementierung
 status: executing
-stopped_at: Phase 8 context gathered
-last_updated: "2026-07-01T07:46:32.037Z"
+stopped_at: context exhaustion at 75% (2026-07-01)
+last_updated: "2026-07-01T09:34:09.492Z"
 last_activity: 2026-07-01
-last_activity_desc: Phase 08 execution resumed (wave continue)
+last_activity_desc: Completed quick task 260701-abc: Fix i18n missing keys (marketplace.accessDenied + calendar form)
 progress:
   total_phases: 8
-  completed_phases: 6
+  completed_phases: 7
   total_plans: 34
-  completed_plans: 29
-  percent: 75
+  completed_plans: 33
+  percent: 88
 ---
 
 # Project State
@@ -136,6 +136,7 @@ None yet.
 | # | Description | Date | Commit | Directory |
 |---|-------------|------|--------|-----------|
 | 260630-gbh | User Settings: Passwort ändern (nur non-LDAP) + Profilbild setzen | 2026-06-30 | merge | [260630-gbh-user-settings-passwort-ndern-nur-non-lda](.planning/quick/260630-gbh-user-settings-passwort-ndern-nur-non-lda/) |
+| 260701-abc | Fix i18n: marketplace.accessDenied + calendar form hardcoded EN strings | 2026-07-01 | e5b76b7 | [260701-abc-i18n-missing-keys](.planning/quick/260701-abc-i18n-missing-keys/) |
 
 ## Deferred Items
 
@@ -147,6 +148,6 @@ Items acknowledged and carried forward from previous milestone close:
 
 ## Session Continuity
 
-Last session: 2026-07-01T06:33:00.382Z
-Stopped at: Phase 8 context gathered
+Last session: 2026-07-01T09:34:09.479Z
+Stopped at: context exhaustion at 75% (2026-07-01)
 Resume file: .planning/phases/08-dashboard-widgets-vollimplementierung/08-CONTEXT.md
diff --git a/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-PLAN.md b/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-PLAN.md
new file mode 100644
index 0000000..b142b8d
--- /dev/null
+++ b/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-PLAN.md
@@ -0,0 +1,87 @@
+---
+quick_id: 260701-abc
+slug: i18n-missing-keys
+date: 2026-07-01
+status: in-progress
+---
+
+# Quick Task: Fix i18n Missing Keys
+
+## Goal
+Fix two i18n bugs found during UAT:
+1. `marketplace.accessDenied` missing from both de.json and en.json
+2. `calendar-source-form.tsx` uses hardcoded English strings instead of translations
+
+## Tasks
+
+### T-01: Add marketplace.accessDenied to de.json
+Add `"accessDenied": "Zugriff verweigert"` to the `marketplace` section in de.json.
+
+**File:** `apps/web/src/messages/de.json`
+**Location:** After `"detailStatusInactive"` (line ~448), before closing `}`
+
+### T-02: Add marketplace.accessDenied to en.json
+Add `"accessDenied": "Access denied"` to the `marketplace` section in en.json.
+
+**File:** `apps/web/src/messages/en.json`
+**Location:** Same position as de.json
+
+### T-03: Add calendar form translation keys to de.json
+Add to `widgets.calendar` section in de.json:
+```json
+"formFieldName": "Name",
+"formFieldType": "Typ",
+"formFieldUrl": "URL",
+"formFieldUsername": "Benutzername",
+"formFieldPassword": "Passwort",
+"formFieldColor": "Farbe",
+"formFieldExchangeMode": "Exchange-Modus",
+"formSave": "Speichern",
+"formSaving": "Wird gespeichert...",
+"formCancel": "Abbrechen",
+"formUrlErrorHttps": "URL muss HTTPS verwenden",
+"formUrlErrorInvalid": "Ungültiges URL-Format"
+```
+
+### T-04: Add calendar form translation keys to en.json
+Add to `widgets.calendar` section in en.json:
+```json
+"formFieldName": "Name",
+"formFieldType": "Type",
+"formFieldUrl": "URL",
+"formFieldUsername": "Username",
+"formFieldPassword": "Password",
+"formFieldColor": "Color",
+"formFieldExchangeMode": "Exchange Mode",
+"formSave": "Save",
+"formSaving": "Saving...",
+"formCancel": "Cancel",
+"formUrlErrorHttps": "URL must use HTTPS protocol",
+"formUrlErrorInvalid": "Invalid URL format"
+```
+
+### T-05: Fix calendar-source-form.tsx
+Replace all hardcoded English strings with `t()` calls. Remove hack on line 298.
+
+**File:** `apps/web/src/components/settings/calendar-source-form.tsx`
+
+Changes:
+- `"Name *"` → `\`${t('calendar.formFieldName')} *\``
+- `"Type *"` → `\`${t('calendar.formFieldType')} *\``
+- `"URL *"` → `\`${t('calendar.formFieldUrl')} *\``
+- `"Username"` → `t('calendar.formFieldUsername')`
+- `"Password"` → `t('calendar.formFieldPassword')`
+- `"Color"` → `t('calendar.formFieldColor')`
+- `"Exchange Mode"` → `t('calendar.formFieldExchangeMode')`
+- `'Saving...'` → `t('calendar.formSaving')`
+- `'Save'` → `t('calendar.formSave')`
+- Cancel button hack → `t('calendar.formCancel')`
+- `'URL must use HTTPS protocol'` → `t('calendar.formUrlErrorHttps')`
+- `'Invalid URL format'` → `t('calendar.formUrlErrorInvalid')`
+
+## Must Haves
+- [ ] `marketplace.accessDenied` present in de.json and en.json marketplace sections
+- [ ] All 12 `formField*` / `form*` keys present in widgets.calendar for both locales
+- [ ] No hardcoded English strings in calendar-source-form.tsx
+- [ ] Hack on line 298 removed
+- [ ] No TypeScript errors introduced
diff --git a/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-SUMMARY.md b/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-SUMMARY.md
new file mode 100644
index 0000000..d45a82d
--- /dev/null
+++ b/.planning/quick/260701-abc-i18n-missing-keys/260701-abc-SUMMARY.md
@@ -0,0 +1,29 @@
+---
+quick_id: 260701-abc
+status: complete
+date: 2026-07-01
+commit: e5b76b7
+---
+
+# Summary: Fix i18n Missing Keys
+
+## What was done
+
+Fixed two i18n bugs found during UAT testing.
+
+### Bug 1: marketplace.accessDenied missing
+Added `"accessDenied"` to the `marketplace` section in both `de.json` and `en.json`. The marketplace page uses `useTranslations('marketplace')` and calls `t('accessDenied')` — the key existed at top level but not under the marketplace namespace.
+
+### Bug 2: calendar-source-form.tsx hardcoded English
+Added 12 new translation keys to `widgets.calendar` in both locale files:
+`formFieldName`, `formFieldType`, `formFieldUrl`, `formFieldUsername`, `formFieldPassword`,
+`formFieldColor`, `formFieldExchangeMode`, `formSave`, `formSaving`, `formCancel`,
+`formUrlErrorHttps`, `formUrlErrorInvalid`
+
+Replaced all hardcoded English strings in `calendar-source-form.tsx` with `t()` calls.
+Removed the locale-detection hack on the Cancel button (`t('calendar.addSource') === 'Add source' ? 'Cancel' : 'Abbrechen'`).
+
+## Verification
+- Browser confirmed: calendar form shows "Typ", "Benutzername", "Passwort", "Farbe", "Speichern", "Abbrechen"
+- Browser confirmed: marketplace console no longer shows MISSING_MESSAGE error
+- TypeScript: no errors