[hexf00]

Background

Add License documentation for Collaboration SDK and for Exchange export configuration, next to the existing Web SDK License page.

Changes

License overview (server/license)

• A table of where the License runs, which files each place needs, and what applies without a License.
• Explicit configuration for Web SDK (plugin / preset), Collaboration SDK (UniverCollabService) and Exchange (configureExchange), each followed by the UNIVER_LICENSE / UNIVER_LICENSE_KEY fallback. The #in-plugin-mode / #in-preset-mode anchors used across the guides are kept.

Collaboration SDK License (server/collaboration/license, new)

• What the License decides: collaborative editing connections (120-second rule), authorized domains, collaboration nodes (single-node vs multi-node License), document types.
• The full collabService.license / endpoint.license API with types, and the editingConnectionsExceeded / nodesStatusChanged events.

Exchange License (server/import-export/license)

• Retitled License to match the Collaboration SDK page; drops the pre-release note and the cross-references to the other SDKs.
• Configuration, per-operation credentials, PDF, quota query and accounting as before.
• The error example wraps an export, and the error table is ordered by how often each code occurs.

Other pages

• Quick Start: set both variables before running the example.
• Deployment: every collaboration node uses the same License, which covers the node count.
• Collaboration integration: adds license_editing_connections_exceeded (resend) and license_unit_type_rejected (conflict) to the reason lists.
• Examples: Multi-node needs a License that covers two nodes.

Before merging

• Collaboration SDK 1.3.0 and the matching Exchange / native packages are published.
• univer-collaboration-examples#34 merges at the same time (Quick Start and Examples describe its License setup).
• es-ES, fr-FR, ja-JP, ko-KR, ru-RU and zh-TW are translated; until then those locales fall back to English.

Verification

• Every changed page renders in next dev in zh-CN and en-US; the new anchors (#collaboration-sdk, #exchange, #editing-connections, #nodes, #unit-types, #多协同节点 / #multiple-collaboration-nodes) resolve.
• The Collaboration SDK API listing matches the declarations on univer-collaboration-sdk main.
• git diff --check and commitlint pass.

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