Merge remote-tracking branch 'gitea/develop' into HEAD

# Conflicts:
#	apps/server/src/app.module.ts
#	apps/server/src/integrations/environment/environment.service.spec.ts
#	apps/server/src/integrations/environment/environment.service.ts
#	apps/server/src/integrations/environment/environment.validation.ts
#	packages/mcp/build/client.js
#	packages/mcp/build/index.js
#	packages/mcp/build/tool-specs.js

.env.example

@@ -124,6 +124,26 @@ MCP_DOCMOST_PASSWORD=
 # MCP_TOKEN=
 # MCP_SESSION_IDLE_MS=1800000
 #
+# BLOB SANDBOX (stash_page). An in-RAM, process-local store that hands large page
+# content + images to an external consumer WITHOUT bloating the model context or
+# requiring Docmost auth. The stash_page tool serializes a page, mirrors its
+# internal images into the store, and returns ONLY a short anonymous URL; the
+# consumer fetches blobs via `GET /api/sb/<uuid>` (no token — the capability is
+# the unguessable UUID + short TTL + TLS). Blobs are RAM-only and cleared on
+# restart. ETag = the blob's sha256 (integrity check).
+# SANDBOX_PUBLIC_URL is the base used to build those URLs; it MUST be reachable
+# by the consumer (do NOT use a loopback address if the consumer is remote).
+# Defaults to APP_URL when unset.
+# NOTE: the store is process-local — blobs live only on the instance that
+# created them. Behind a multi-replica load balancer WITHOUT sticky sessions a
+# consumer may hit a different instance and get a 404 (indistinguishable from an
+# expired blob). Single-host deployments are unaffected.
+# SANDBOX_PUBLIC_URL=https://docs.example.com
+# SANDBOX_TTL_MS=3600000
+# SANDBOX_MAX_BYTES=8388608
+# SANDBOX_MAX_IMAGE_BYTES=20971520
+# SANDBOX_MAX_TOTAL_BYTES=134217728
+#
 # AI-AGENT ATTRIBUTION (comments/pages written via MCP are badged as "AI"):
 # attribution is driven by a per-user `is_agent` flag on the users row. There is
 # NO admin UI/API for it — set it out-of-band with SQL. Use a DEDICATED service
@@ -133,7 +153,7 @@ MCP_DOCMOST_PASSWORD=
 # (including normal human edits) would then be mis-attributed as AI.
 
 # Agent-roles catalog source: an http(s):// base URL to the catalog's raw files
-# (the server appends /index.json and /bundles/<id>/<lang>.json). This value is
+# (the server appends /index.yaml and /bundles/<id>/<lang>.yaml). This value is
 # baked into the Docker image at build time per branch (see the Dockerfile ARG
 # AI_AGENT_ROLES_CATALOG_URL and the CI build-args). Set it here only to point a
 # local/non-Docker run at a catalog; if unset, the "import role from catalog"