Add docker compose services (tailscale-mcp + nginx-claude-filter) behind
a claude-funnel profile that expose the login-flow MCP server via
Tailscale Funnel with IP-based access control:
- /mcp endpoint restricted to Claude AI outbound IPs (160.79.104.0/21)
- /oauth/*, /.well-known/*, /app paths open to all IPs (user login flow)
- All other paths return 404
Also add favicon.png served at /favicon.ico for connector directory
discovery (Google favicon service).
Usage:
docker compose --profile login-flow --profile claude-funnel up -d
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Relax redirect_uri validation to accept HTTPS for remote hosts (e.g.,
cloud-hosted MCP clients like Claude AI) while keeping HTTP allowed
for localhost per RFC 8252 loopback exception.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Drop OIDC fork: comment out third_party/oidc mount, use upstream
v1.16.3 from app store (fixes consent redirect race, PR #631)
- Support client_secret_basic auth: add _extract_basic_auth() helper
so TS MCP SDK can authenticate at token endpoint (RFC 6749 §2.3.1)
- Multi-issuer JWT validation: accept tokens with internal Docker
issuer (http://app:80) or public URL (NEXTCLOUD_PUBLIC_ISSUER_URL)
since AS proxy obtains tokens server-to-server
- Introspection fallback: try token introspection when JWT verification
fails, supporting both JWT and opaque token types
- Register all tool scopes in DCR: add semantic:read, collectives:read,
collectives:write to OIDC client allowed_scopes so tokens include
them and semantic search tools are visible to authenticated clients
- Auto-create Astrolabe OAuth client: new app-hook creates OIDC client
and stores credentials in config.php so the "Authorize via OAuth"
button works without manual setup
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fix emoji clearing bug: use _UNSET sentinel in update_collective so
emoji=None sends {"emoji": null} instead of raising ValueError
- Move collectives_get_trashed_collectives to Read Tools section
- Remove redundant is_trash field from ListTrashedPagesResponse
- Add page lifecycle note to collectives_trash_page docstring
- Add unit test for clearing collective emoji via update_collective
- Add integration test for clearing collective emoji via MCP tool
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fix inconsistent error code in set_collective_emoji (400 → -32603)
- Allow clearing emoji via set_collective_emoji(emoji=None)
- Remove destructiveHint from trash operations (soft deletes are recoverable)
- Change delete_collective to idempotentHint=False (requires trash precondition)
- Add restore_collective and get_trashed_collectives tools
- Add unit tests for ValueError guard, clear-emoji path, and new tools
- Add integration test for full trash/restore/delete lifecycle
- Verify move_page returns new title in response message
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Rename collectives_update_collective to collectives_set_collective_emoji
(more precise since only emoji is settable)
- Use standard JSON-RPC error code -32603 (INTERNAL_ERROR) instead of -1
- Handle UnicodeDecodeError when reading page content via WebDAV
- Replace brittle 'Welcome' content assertion with length check
Fixes CI: test_update_operations_not_idempotent no longer matches the
renamed tool, which is correctly idempotent (no ETag involved).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fix assign_tag sending Content-Type header with no body
- Mark collectives_update_collective as idempotent (no ETag involved)
- Raise OCSError when 'data' key missing instead of silent fallback
- Tighten color validator to 3 or 6 hex chars only
- Add comment explaining null emoji semantics in set_page_emoji
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Validate OCS envelope in trash_collective, delete_collective, trash_page
- Guard _unwrap_ocs against non-OCS responses with informative OCSError
- Remove _get_ocs_headers() indirection, use class constants directly
- Split headers: _OCS_HEADERS (GET) vs _OCS_HEADERS_JSON (with body)
- Fix docstring claiming emoji param is required when it is optional
- Rename misleading test, add test for non-OCS envelope handling
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add collectives_trash_collective and collectives_delete_collective MCP
tools with proper destructiveHint annotations. Refactor integration test
fixture to use MCP tools for cleanup instead of direct httpx/OCS calls.
Optimize _get_ocs_headers() to class-level constant.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Bugs:
- assign_tag/remove_tag now call _unwrap_ocs to surface OCS-level errors
- trash_page changed to idempotentHint=False (trashing twice errors)
- WebDAV path parts stripped of slashes to prevent double-slash paths
Robustness:
- _unwrap_ocs uses ocs.get("data", {}) instead of ocs["data"]
- Unit test added for missing data key in OCS envelope
Minor:
- MCP error codes use -1 (project convention) instead of HTTP status codes
- update_collective docstring notes that emoji is required
- CollectiveTag.color validated as hex format via field_validator
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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>
- Add destructiveHint=True to collectives_remove_tag (matches "remove"
keyword pattern in annotation tests)
- Change collectives_update_collective to idempotentHint=False (update
operations are non-idempotent per project convention)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Validate OCS envelope status before unwrapping data (raise OCSError on
statuscode >= 400)
- Fix test data: filePath should be "" for root-level pages, not filename
- Catch specific exceptions (HTTPStatusError, OSError) instead of bare
Exception in WebDAV content fetch, include error in log message
- Return updated resource data from update_collective, move_page, and
set_page_emoji instead of discarding API responses
- Fix create_page docstring to mention collectivePath/filePath/fileName
- Remove unused additional_headers parameter from _get_ocs_headers
- Add unit test for OCS error status validation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implement MCP tools for the Collectives wiki/documentation app, enabling
agentic workflows for team knowledge base management.
16 tools covering collectives, pages, tags, search, and trash:
- Read: list collectives, list/get pages (with WebDAV content), search,
list tags, list trashed pages
- Write: create/update collective, create/move/trash/restore pages,
set emoji, create/assign/remove tags
Includes Docker hook for app installation, OCS API client with envelope
unwrapping, Pydantic models, unit tests (16), and integration tests (10).
Closes#621
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Smithery is no longer a supported deployment mode. Remove all Smithery-specific
code paths, middleware, configuration, and tests. This simplifies the codebase
by eliminating DeploymentMode enum, SmitheryConfigMiddleware, session config
context variables, and the smithery_main entrypoint.
Files deleted: Dockerfile.smithery, smithery.yaml, smithery_main.py
ADR-016 retained with deprecated status for historical reference.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Make /api/v1/status and /api/v1/vector-sync/status available in all
non-Smithery deployment modes so Astrolabe can show server status even
in single-user BasicAuth mode. Previously these were only mounted when
OAuth or multi-user BasicAuth with offline access was enabled.
- Split management API routes into public (Tier 1) and authenticated (Tier 2+)
- Enable semantic search with in-memory Qdrant for single-user docker service
- Update astrolabe submodule with admin settings fix
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Update stale httpx reference to niquests in calendar.py type comment
- Replace inline inspect.isawaitable with _maybe_await helper in tests
- Fix incorrect port number in docker-compose unstructured comment
- Remove commented-out smithery service block (dead code)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When Nextcloud stores CalDAV objects, the server-side filename may differ
from the VTODO/VEVENT UID. The caldav fork constructed object URLs from
the UID instead of the actual <d:href> from REPORT responses, causing
list_todos to return wrong hrefs, delete_todo to silently no-op, and
update_todo to fail.
Upstream caldav v3.0.1 fixes this in _async_request_report_build_resultlist
by passing url=self.url.join(url) when constructing result objects.
Key changes:
- Replace caldav fork with upstream caldav>=3.0.1,<4.0
- Update imports to caldav.aio module
- Add _maybe_await() helper for v3's dual-mode methods that return
either objects or coroutines depending on async context
- Add _async_object_by_uid() to work around upstream's get_object_by_uid
not being async-aware (it iterates a coroutine synchronously)
- Adapt save_event/save_todo (no longer return tuples)
- Pass url=calendar.url.join(href) in _search_events_by_date
- Pass include_completed=True in list_todos to match previous behavior
- Add integration test for filename != UID scenario
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Fix three related contacts bugs:
- Parse dict-format vCard fields ({value, type}) that pythonvCard4 returns,
which previously crashed Pydantic validation expecting plain strings
- Include tel field in client output so phone numbers reach MCP tools
- Clarify addressbook parameter expects URI slug, not displayname
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace `assert entry.code_challenge` with a proper if-guard returning a
500 JSON error in the token endpoint, since Python's -O flag strips
asserts and would silently disable PKCE enforcement.
Invalidate the scope cache immediately after Login Flow v2 provisioning
completes, so users no longer hit ProvisioningRequiredError for up to
5 minutes after successfully authenticating.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Disable Nextcloud's bruteforce protection and rate limiting via a new
post-installation hook, preventing 429 errors during repeated DCR calls
in CI. Add warning-level logging to all 8 error paths in the AS proxy
token endpoint to make login-flow 400 errors diagnosable.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add 429 retry with exponential backoff to register_client() (fixes CI
oauth matrix failures from parallel DCR requests)
- Make client_id, redirect_uri, and PKCE mandatory at token endpoint
- Add null-checks for discovery_url and OAuth credentials in proxy flows
- Add OIDC discovery document caching with 5-min TTL
- Add per-IP rate limiting on /oauth/register DCR proxy
- Discover DCR endpoint from OIDC discovery instead of hardcoding
- Extract extract_user_id_from_token to auth/token_utils.py (breaks
circular imports between server/ and auth/ layers)
- Add TTL scope cache in scope_authorization.py (avoids DB hit per tool)
- Add defense-in-depth scope validation in storage layer
- Broaden elicitation exception handling with graceful fallback
- Add idempotentHint to nc_auth_check_status, return "pending" status
after accepted elicitation, add polling interval to description
- Change ALL_SUPPORTED_SCOPES from tuple to frozenset for O(1) lookups
- Replace Optional[str] with str | None throughout config.py
- Use default_factory for ProxyCodeEntry/ASProxySession dataclasses
- Add proxy code/session cleanup to background loop
- Fix OIDC verification CI step to only run for oauth/login-flow modes
- Add unit tests for access.py REST endpoints (10 tests)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
MCP clients like Claude Code were unable to use tools because tokens
obtained directly from Nextcloud had the wrong audience claim. The MCP
server now acts as its own OAuth Authorization Server, proxying auth
to Nextcloud with its own client_id so tokens have the correct audience.
New endpoints: /.well-known/oauth-authorization-server, /oauth/token,
/oauth/register. Modified /oauth/authorize from pass-through to
intermediary pattern. PRM now points authorization_servers to the MCP
server instead of Nextcloud.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Consolidate MCP session + login flow cleanup into _mcp_session_with_login_flow() helper,
replacing 4 duplicated AsyncExitStack sites in app.py
- Fix get_shared_storage() race condition by using module-level anyio.Lock() init
(reverts regression from ba59763)
- Collapse cosmetic if/else branching in scope_authorization.py
- Consolidate dual password storage paths into single store_app_password_with_scopes() call
- Mark unused request param as _ in list_supported_scopes
- Make ALL_SUPPORTED_SCOPES an immutable tuple; use list() instead of .copy()
- Add hasattr(ctx, "elicit") guard in elicitation.py, narrow except to NotImplementedError
- Add YAML comment explaining --oauth flag for mcp-login-flow service
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix anyio.Lock() created at module import time; use lazy init in
get_shared_storage() to avoid instantiation before event loop exists
- Stop get_login_flow_session from silently swallowing DB exceptions;
re-raise and handle in caller with proper error response
- Update ProvisionAccessResponse and UpdateScopesResponse status field
docs to include all actual values (declined, cancelled, unchanged)
- Narrow except clause in present_login_url to (AttributeError,
NotImplementedError) instead of bare Exception
- Add KeyError handling in LoginFlowV2Client.initiate() and poll() for
clear errors on malformed Nextcloud responses
- Simplify redundant env-var bypass branches in scope_authorization.py
- Extract _maybe_login_flow_cleanup() context manager to replace 4
inline cleanup loop registrations in app.py; move sleep to end of
loop body so cleanup runs once at startup
- Replace fragile string replacement in _rewrite_login_flow_url with
proper urllib.parse URL handling
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix circular dependency in scope_authorization: auth tools requiring
only identity scopes (openid/profile/email) now bypass the login flow
provisioning check, so unprovisioned users can call provisioning tools
- Fix no-op detection in nc_auth_update_scopes: NULL scopes (legacy "all")
now correctly map to ALL_SUPPORTED_SCOPES instead of empty set
- Fix get_app_password_with_scopes swallowing exceptions: re-raise instead
of returning None, matching sibling methods
- Add missing audit logging to update_app_password_scopes,
delete_login_flow_session, and delete_expired_login_flow_sessions
- Pin setup-uv to v7.3.1 in CI unit-test job (was v7.3.0)
- Add FastMCP type annotation to register_auth_tools parameter
- Log warning when user accepts elicitation without checking acknowledged box
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Consolidate three independent RefreshTokenStorage lazy singletons into a
single lock-protected get_shared_storage() function, eliminating race
conditions on concurrent first-access. Remove blanket try/except in
_get_stored_scopes so storage errors propagate as proper MCP errors
instead of silently triggering "please provision" messages. Handle
declined/cancelled elicitation results in Login Flow tools by cleaning up
sessions and returning clear status. Add update_app_password_scopes() to
avoid unnecessary decrypt/re-encrypt when only scopes change. Add
unprovisioned-user early exit and no-op detection to nc_auth_update_scopes.
Remove four dead config fields and misleading NEXTCLOUD_PASSWORD deprecation
warning. Add periodic login flow session cleanup task. Generate separate
Fernet keys per service. Add board cleanup in deck integration test. Gate
CI unit tests on linting and skip Astrolabe build for single-user profile.
Fix test markers from oauth to multi_user_basic for astrolabe integration
tests. Update login_flow.py docstrings to document outbound HTTP calls.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix data loss in nc_auth_update_scopes: remove premature
delete_app_password call; old password stays valid until upsert
replaces it on successful re-provisioning
- Replace assert with proper error return in nc_auth_check_status
- Add lazy singleton for RefreshTokenStorage in auth_tools,
scope_authorization, and context to avoid per-call re-initialization
- Centralize _is_login_flow_mode() to get_settings().enable_login_flow
and remove duplicate definitions and per-call os.getenv reads
- Add dev-only comment to TOKEN_ENCRYPTION_KEY in docker-compose.yml
- Gate OIDC build steps in CI behind matrix.needs-playwright
- Add diagnostic step reporting Playwright skip count in CI
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Use lowercase generics (list[...]) in new deck response models
- Add clarifying comment on AddressBook.uri slug semantics
- Fall back calendar_display_name to calendar_name when absent
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Guard board.labels against None in deck_get_labels and resource
- Add TODO comments for calendar_display_name in single-calendar paths
- Document _raw_contact_to_model scope limitation (maps only what the
client returns; expanding requires changes to vCard parsing)
- Log debug warning when event has no start_datetime
- Verified Table model is safe with extra fields (Pydantic v2 ignores)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Enrich single-calendar event dicts with calendar_name before mapping
to CalendarEventSummary (list_events and upcoming_events paths)
- Extract _raw_contact_to_model() from inline mapping in contacts.py,
fix custom_fields type annotation to dict[str, Any]
- Add unit tests for _event_dict_to_summary covering categories parsing,
falsy coercion, and calendar name passthrough
- Replace duplicated test helper with import of production function
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Restore contact email/birthday/nickname data and per-event calendar
source that were silently dropped during response model wrapping.
Remove dead elif branches in OAuth deck tests, add regression tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
MCP tools returning raw lists caused FastMCP's _convert_to_content() to create
one TextContent block per element. Most MCP clients only read content[0], so
they saw a single result instead of the full list.
Wrapped 9 tool functions in proper response objects:
- deck: deck_get_boards, deck_get_stacks, deck_get_cards, deck_get_labels
- calendar: nc_calendar_list_events, nc_calendar_get_upcoming_events
- contacts: nc_contacts_list_addressbooks, nc_contacts_list_contacts
- tables: nc_tables_list_tables
Closes#568
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Enable ruff PLC0415 rule for all source files (tests excluded via
per-file-ignores). Move 136 inline imports to top-level across 33 files.
8 imports suppressed with noqa for legitimate reasons: circular
dependencies (client/__init__.py, context.py), optional dependency
guards (app.py document processors, auth/userinfo_routes.py), and
post-env-setup imports (smithery_main.py).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Move httpx import to top-level and use anyio task group for concurrent
validation in cleanup_invalid_app_passwords (storage.py)
- Respect Retry-After header for 429 responses, capped at 300s (oauth_sync.py)
- Soften pre-validation exceptions so transient failures don't crash the
background sync task (oauth_sync.py)
- Replace f-string SQL with blanket DELETE and add returncode checks (conftest.py)
- Extract clear_stale_test_state() helper to deduplicate cleanup logic
in astrolabe background sync tests
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The revoke test failed because it only completed Step 2 (app password) but
not Step 1 (OAuth authorization). In hybrid mode, Astrolabe requires both
steps for $isFullyConfigured=true, which gates the "Revoke Access" button.
Changes:
- Use complete_astrolabe_authorization() in revoke test for full two-step flow
- Add stale state cleanup (app passwords, bruteforce entries, Astrolabe prefs)
to both enablement and revoke tests
- Add startup cleanup of invalid app passwords in BasicAuth mode
- Pre-validate credentials before entering scanner loop to fail fast
- Handle 401/403/429 in scanner with proper backoff and circuit breaking
- Clean up app passwords in test_users_setup fixture teardown
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
caldav types declare ssl_verify_cert as Union[bool, str] but the value
is passed through to httpx which accepts ssl.SSLContext. Add type: ignore
annotation to satisfy the ty type checker in CI.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
httpx emits a DeprecationWarning when verify=<str> is passed, recommending
ssl.SSLContext instead. This affected both our httpx client factories and
the caldav library passthrough.
Changed get_nextcloud_ssl_verify() to return bool | ssl.SSLContext instead
of bool | str by constructing an SSLContext when NEXTCLOUD_CA_BUNDLE is set.
All downstream consumers (httpx, caldav) natively accept ssl.SSLContext.
Also fixed app password endpoint tests that used overly broad MagicMock
(auto-generated truthy nextcloud_ca_bundle attribute).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add NEXTCLOUD_VERIFY_SSL and NEXTCLOUD_CA_BUNDLE env vars to configure
TLS certificate verification for all outbound Nextcloud connections.
Centralizes SSL config via a new HTTP client factory (http.py) used by
all 27 Nextcloud-bound call sites, including API clients, OIDC endpoints,
OAuth flows, and health checks.
Closes#560
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Trim whitespace from comma-separated category values in all three
methods: _create_ical_event, _merge_ical_properties, and
_merge_ical_todo_properties. Prevents leading/trailing spaces in
category names from inputs like "work, meeting".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
_merge_ical_properties() only handled a subset of event fields, silently
dropping categories, recurrence_rule, attendees, and reminder_minutes
during updates. These fields were fully supported by _create_ical_event()
and accepted by the MCP tool, but never applied.
Closes#544
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
PR #539 fixed date-range filtering so events outside the queried range
are excluded. However, recurring events still returned the master event
with its original DTSTART instead of expanded occurrences.
Add <C:expand> element to CalDAV REPORT requests (RFC 4791 §9.6.5) when
both date bounds are provided, so the server returns one VEVENT per
occurrence with the correct DTSTART. Refactor VEVENT parsing into a
shared helper and add _parse_all_ical_events() to handle multi-VEVENT
responses from expanded results.
Closes#538
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
get_calendar_events() accepted start/end datetime parameters but called
calendar.events() which fetches all events, silently discarding the
date filters. This caused nc_calendar_list_events and
nc_calendar_get_upcoming_events to return the entire calendar history.
Add _search_events_by_date() helper that builds a CalDAV REPORT query
with a <time-range> filter (RFC 4791 §9.9) for server-side filtering.
Falls back to calendar.events() when no dates are given.
Closes#538
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Split the monolithic management.py (1988 lines) into 4 focused modules:
- management.py: Server status, user sessions, shared helpers (~520 lines)
- passwords.py: App password provisioning for BasicAuth mode (~300 lines)
- webhooks.py: Webhook registration management (~290 lines)
- visualization.py: Search and PDF preview endpoints (~810 lines)
Backward compatibility maintained via __init__.py re-exports.
Updated test imports to use new module paths.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace the client-side PDF.js viewer with server-side rendering using PyMuPDF.
This avoids CSP worker restrictions and ES private field access issues that
affected Chromium browsers.
Changes:
- Add /api/v1/pdf-preview endpoint to MCP server (management.py)
- Add pdf-preview route and controller action in Astrolabe PHP backend
- Refactor PDFViewer.vue to display server-rendered PNG images
- Remove pdfjs-dist dependency and client-side PDF loading code
- Use @nextcloud/axios for CSRF token handling in PDFViewer
The server downloads the PDF via WebDAV, renders the requested page with
PyMuPDF at the specified scale, and returns a base64-encoded PNG image.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>