feat(sharing): publish writable and manageable domains on the account payload

Every accountAccess entry on GET /api/auth/me carries writableDomains
and manageableDomains: the sections the grant opens, intersected with
the sections whose routes accept a delegated write at that level. A
READ grant gets two empty lists, a WRITE grant gets writable sections
only, a MANAGE grant gets both, and the vault appears in neither.

The client parser checks the structural invariants (no repeats, within
the grant's sections, manageable within writable, nothing below the
level) and requires the two published views of the active record to
agree on the lists. Regenerate the OpenAPI document and extend the
payload consumer guard with the active-record readers.

docs/api/openapi.yaml

@@ -65685,6 +65685,32 @@ components:
                   - type: "null"
               canWrite:
                 type: boolean
+              writableDomains:
+                type: array
+                items:
+                  type: string
+                  enum:
+                    - measurements
+                    - medications
+                    - labs
+                    - profile
+                    - illness
+                    - mind
+                    - cycle
+                    - documents
+              manageableDomains:
+                type: array
+                items:
+                  type: string
+                  enum:
+                    - measurements
+                    - medications
+                    - labs
+                    - profile
+                    - illness
+                    - mind
+                    - cycle
+                    - documents
             required:
               - accountId
               - username
@@ -65695,6 +65721,8 @@ components:
               - recordKind
               - sections
               - canWrite
+              - writableDomains
+              - manageableDomains
             additionalProperties: false
         active:
           anyOf:
@@ -65747,6 +65775,32 @@ components:
                     - type: "null"
                 canWrite:
                   type: boolean
+                writableDomains:
+                  type: array
+                  items:
+                    type: string
+                    enum:
+                      - measurements
+                      - medications
+                      - labs
+                      - profile
+                      - illness
+                      - mind
+                      - cycle
+                      - documents
+                manageableDomains:
+                  type: array
+                  items:
+                    type: string
+                    enum:
+                      - measurements
+                      - medications
+                      - labs
+                      - profile
+                      - illness
+                      - mind
+                      - cycle
+                      - documents
               required:
                 - accountId
                 - username
@@ -65757,6 +65811,8 @@ components:
                 - recordKind
                 - sections
                 - canWrite
+                - writableDomains
+                - manageableDomains
               additionalProperties: false
             - type: "null"
         recordKind: