feat(notify): add notif to internal users when granted

- add coalesced protection to avoid mail bombing if an invited goes many grant in a short period
    - add resentd method in share menu item (work for both internal and external users)
    - user can disable email notification via his properties
    - add env variable from admin to disable notifications

static/js/core/icons.js

@@ -338,6 +338,10 @@ const OxiIcons = {
         576,
         'm 360.55,24 v 72 h 64 c 79.5,0 144,64.5 144,144 0,93.4 -82.8,134.8 -100.6,142.6 -2.2,1 -4.6,1.4 -7.1,1.4 h -2.5 c -9.8,0 -17.8,-8 -17.8,-17.8 0,-8.3 5.9,-15.5 12.8,-20.3 8.9,-6.2 19.2,-18.2 19.2,-40.5 0,-45 -36.5,-81.5 -81.5,-81.5 h -30.5 v 72 c 0,9.7 -5.8,18.5 -14.8,22.2 -9,3.7 -19.3,1.7 -26.2,-5.2 l -136,-136 c -9.4,-9.4 -9.4,-24.6 0,-33.9 l 136,-136 c 6.9,-6.9 17.2,-8.9 26.2,-5.2 9,3.7 14.8,12.5 14.8,22.2 z M 112.5,96 c -44.2,0 -80,35.8 -80,80 v 256 c 0,44.2 35.8,80 80,80 h 256 c 44.2,0 80,-35.8 80,-80 v -32 c 0,-17.7 -14.3,-32 -32,-32 -17.7,0 -32,14.3 -32,32 v 32 c 0,8.8 -7.2,16 -16,16 h -256 c -8.8,0 -16,-7.2 -16,-16 V 176 c 0,-8.8 7.2,-16 16,-16 h 16 c 17.7,0 32,-14.3 32,-32 0,-17.7 -14.3,-32 -32,-32 z'
     ],
+    'paper-plane': [
+        576,
+        'M290.5 287.7L491.4 86.9 359 456.3 290.5 287.7zM457.4 53L256.6 253.8 88 185.3 457.4 53zM38.1 216.8l205.8 83.6 83.6 205.8c5.3 13.1 18.1 21.7 32.3 21.7 14.7 0 27.8-9.2 32.8-23.1L570.6 8c3.5-9.8 1-20.6-6.3-28s-18.2-9.8-28-6.3L39.4 151.7c-13.9 5-23.1 18.1-23.1 32.8 0 14.2 8.6 27 21.7 32.3z'
+    ],
     pause: [
         384,
         'M48 32C21.5 32 0 53.5 0 80L0 432c0 26.5 21.5 48 48 48l64 0c26.5 0 48-21.5 48-48l0-352c0-26.5-21.5-48-48-48L48 32zm224 0c-26.5 0-48 21.5-48 48l0 352c0 26.5 21.5 48 48 48l64 0c26.5 0 48-21.5 48-48l0-352c0-26.5-21.5-48-48-48l-64 0z'

static/js/core/types.js

@@ -166,6 +166,7 @@
  * @property {string} [family_name]   Last/family name; set at OIDC JIT or via PATCH /api/auth/me/profile (PR 24)
  * @property {string} [email_verified_at]  ISO 8601 timestamp of the first proof-of-email-control (PR 23). Omitted when unverified.
  * @property {string} [preferred_locale]    User-chosen locale code (e.g. `"fr"`, `"zh-TW"`); omitted when unset. Round-trips via PATCH /api/auth/me/profile.
+ * @property {boolean} notify_on_share       Whether the user wants share-notification emails ("Alice shared X with you"). Default TRUE. Toggled via the profile checkbox; round-trips via PATCH /api/auth/me/profile.
  */
 
 /**
@@ -365,6 +366,7 @@
  * @property {string}                              granted_at   - ISO-8601
  * @property {string|null}                         [expires_at] - ISO-8601 or absent.
  * @property {boolean}                             has_password - True when a token subject has a password set.
+ * @property {boolean}                             [is_external] - True when a user subject is a magic-link-only external user (PR N2). Drives the My Shares menu label ("Resend invitation email" vs "Notify by email"). Always false for token and group subjects.
  */
 
 /**