feat(course): reset student course progress (#671)

* feat(course): add reset student course progress action

Give course admins and tutors a destructive reset-progress flow on the
student people detail page. The backend clears learner progress for one
(courseId, memberId) pair in a single transaction while keeping the
groupmember enrolled, and logs an audit summary. The dashboard shows a
confirmation dialog with impact counts from analytics before deleting.

Co-authored-by: Rotimi Best <[email protected]>

* fix(i18n): add localized reset progress strings for all locales

Co-authored-by: Rotimi Best <[email protected]>

* fix(course): scope reset progress to course data only

Stop deleting org-level community questions and answers during course
progress reset. Fix course newsfeed deletion order so comments on a
student's posts are removed before the posts themselves. Restrict reset
to student members, move analytics loading to the person detail layout,
and rename impact copy to course newsfeed only.

Co-authored-by: Rotimi Best <[email protected]>

* fix(course): address Greptile review on reset progress

Make progressImpact opt-in via includeProgressImpact query param so
analytics requests avoid extra DB work unless the reset dialog needs it.
Count only student-authored course newsfeed posts and comments in the
impact summary to avoid double-counting replies on the student's posts.

Co-authored-by: Rotimi Best <[email protected]>

---------

Co-authored-by: Cursor Agent <[email protected]>
Co-authored-by: Rotimi Best <[email protected]>

apps/dashboard/src/lib/utils/translations/hi.json

@@ -242,6 +242,10 @@
         "unpinned": "अनपिन किया गया",
         "successfully": "सफलतापूर्वक",
         "feed_delete_success": "फ़ीड सफलतापूर्वक हटा दी गई"
+      },
+      "people": {
+        "progress_reset": "प्रगति रीसेट की गई",
+        "progress_reset_failed": "प्रगति रीसेट नहीं हो सकी"
       }
     },
     "landing_page_settings": {
@@ -1100,6 +1104,26 @@
           "no": "नहीं",
           "yes": "हाँ"
         },
+        "reset_progress": {
+          "button": "प्रगति रीसेट करें",
+          "dialog": {
+            "title": "{studentName} की प्रगति रीसेट करें?",
+            "intro": "यह इस कोर्स में इस छात्र की प्रगति को स्थायी रूप से हटा देगा। वे नामांकित रहेंगे और पाठ 1 से फिर से शुरू कर सकेंगे।",
+            "bullets": {
+              "lessons": "पूर्ण पाठ — {completed} में से {total}",
+              "exercises": "जमा किए गए अभ्यास — {count} सबमिशन",
+              "comments": "इस छात्र के पाठ टिप्पणियाँ — {count}",
+              "newsfeed": "इस छात्र की कोर्स न्यूज़फ़ीड पोस्ट और जवाब — {count}",
+              "video_progress": "वीडियो देखने की प्रगति — {count} ट्रैक किए गए पाठ",
+              "attendance": "उपस्थिति प्रविष्टियाँ — {count}",
+              "certificate_yes": "प्रमाणन/अनुपालन रिकॉर्ड — हाँ",
+              "certificate_no": "प्रमाणन/अनुपालन रिकॉर्ड — नहीं"
+            },
+            "warning": "इसे पूर्ववत नहीं किया जा सकता।",
+            "cancel": "रद्द करें",
+            "confirm": "हटाएँ"
+          }
+        },
         "invite_modal": {
           "title": "लोगों को आमंत्रित करें",
           "invite": "शिक्षकों को आमंत्रित करें",