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docs: drop removed token-exchange mode; deprecate superseded auth ADRs

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The OAuth token-exchange deployment mode was removed (ADR-022) and has no
implementation — only a vestigial `enable_token_exchange` flag remains. Its
documentation still presented it as a usable mode, which misleads self-hosters.
The only supported deployment modes are single_user_basic, multi_user_basic,
and login_flow.

Token-exchange removals (how-to/config for a removed mode):
- delete docs/CRITICAL-TOKEN-EXCHANGE-PATTERN.md
- delete docs/oauth-architecture-comparison.md (orphaned; labelled the removed
  pass-through mode as "current implementation")
- env.sample: drop the "OAUTH TOKEN EXCHANGE MODE" section
- docker-compose.yml: drop ENABLE_TOKEN_EXCHANGE/TOKEN_EXCHANGE_CACHE_TTL from
  the keycloak service (dead flags)
- docs/webhook-management-guide.md: drop the token-exchange deployment section
- docs/configuration-migration-v2.md: drop the token-exchange migration scenario
- docs/observability.md: drop the never-emitted mcp_oauth_token_exchange_total

Auth ADR status corrections:
- ADR-004: Draft -> Superseded by ADR-022/ADR-023 (token-exchange/federated
  design not adopted); note the three supported modes.
- ADR-002: extend the deprecation pointer to ADR-022/ADR-023.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Chris Coutinho
2026-06-14 11:49:45 +02:00
co-authored by Claude Opus 4.8
parent 64e50c0bcc
commit 16784d6fd4
9 changed files with 13 additions and 780 deletions
Download Patch File Download Diff File Expand all files Collapse all files
env.sample
-34
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@@ -101,40 +101,6 @@ NEXTCLOUD_PASSWORD=
# Optional features (semantic search, document processing):
# See "Optional Features" section below
# ============================================
# OAUTH TOKEN EXCHANGE MODE (Advanced)
# ============================================
# Multi-user OAuth with RFC 8693 token exchange
# Use for: Advanced deployments requiring separate MCP and Nextcloud tokens
# MCP tokens are separate from Nextcloud tokens
#
# Required:
#ENABLE_TOKEN_EXCHANGE=true
#
# Optional - Pre-registered OAuth Client:
# If you pre-register the client instead of using DCR:
#NEXTCLOUD_OIDC_CLIENT_ID=
#NEXTCLOUD_OIDC_CLIENT_SECRET=
#
# Optional - Token Exchange Configuration:
# Cache TTL in seconds (default: 300 = 5 minutes)
#TOKEN_EXCHANGE_CACHE_TTL=300
#
# Optional - Background Operations:
# Note: ENABLE_SEMANTIC_SEARCH automatically enables this in multi-user modes
#ENABLE_BACKGROUND_OPERATIONS=true
#TOKEN_ENCRYPTION_KEY=
#TOKEN_STORAGE_DB=/app/data/tokens.db
#
# Optional - Custom OIDC Discovery:
#NEXTCLOUD_OIDC_DISCOVERY_URL=
#
# MCP Server URL (for OAuth redirects):
#NEXTCLOUD_MCP_SERVER_URL=http://localhost:8000
#
# Optional features (semantic search, document processing):
# See "Optional Features" section below
# ============================================
# OAUTH CLIENT ALLOWLISTS (OAuth modes)
# ============================================