fix: address PR review feedback (round 2)

Bug fixes:
- Catch OCSError/HTTPStatusError in all server tools, convert to McpError
- Guard update_collective against empty body (raise ValueError)
- Use restore_page response data in status message

ADR-017 annotation fix:
- Distinguish "remove" (reversible association) from "delete" (permanent):
  remove_tag and deck_remove_label_from_card no longer set destructiveHint
- Update annotation test to exclude "remove" from destructive keywords

Data model improvements:
- Add trashTimestamp field to PageInfo
- Create ListTrashedPagesResponse with is_trash context flag
- Add collective_id to ListTagsResponse

Test robustness:
- Read NC credentials from environment variables (not hardcoded)
- Filter landing page by parentId == 0 instead of assuming pages[0]

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

nextcloud_mcp_server/models/collectives.py

@@ -42,6 +42,9 @@ class PageInfo(BaseModel):
         default_factory=list, description="Ordered subpage IDs"
     )
     isFullWidth: bool | None = Field(default=None, description="Full-width page layout")
+    trashTimestamp: int | None = Field(
+        default=None, description="Timestamp when the page was trashed"
+    )
 
 
 class CollectiveTag(BaseModel):
@@ -120,11 +123,20 @@ class SearchPagesResponse(BaseResponse):
     collective_id: int = Field(description="Collective ID")
 
 
+class ListTrashedPagesResponse(ListPagesResponse):
+    """Response for listing trashed pages in a collective."""
+
+    is_trash: bool = Field(
+        default=True, description="Indicates these are trashed pages"
+    )
+
+
 class ListTagsResponse(BaseResponse):
     """Response for listing tags in a collective."""
 
     tags: list[CollectiveTag] = Field(description="List of tags")
     total: int = Field(description="Total number of tags")
+    collective_id: int = Field(description="Collective ID")
 
 
 class CreateTagResponse(BaseResponse):