feat: add default author for private sources

[MaGOs92]

No description provided.

[Copilot]

Pull request overview

Adds support for configuring a per-source “default author” (for PRIVATE sources) and uses it as a fallback email recipient when a report is processed/ignored.

Changes:

• Add defaultAuthor (jsonb) to Source + DB migration.
• Add PUT /sources/:idSource endpoint with source-token ownership checks to update nom and/or defaultAuthor.
• Update report notification logic to send emails to author.email or source.defaultAuthor.email.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/modules/source/source.entity.ts	Adds defaultAuthor column to Source entity and sets it on PRIVATE creation.
src/modules/source/source.dto.ts	Adds DTO validation for defaultAuthor and introduces UpdateSourceDTO.
src/modules/source/source.service.ts	Updates token lookup selection + adds new updateOne(id, dto) method.
src/modules/source/source.controller.ts	Adds PUT /sources/:idSource endpoint.
src/modules/source/source.module.ts	Registers SourceMiddleware for PUT source route.
src/modules/source/source.middleware.ts	Adds PUT-specific ownership enforcement (idSource param).
src/common/base-report.service.ts	Adds fallback to defaultAuthor.email for notification emails.
src/migrations/index.ts	Registers new migration.
src/migrations/1781234567890-add-source-default-author.ts	Adds defaultAuthor jsonb column to sources table.
src/tests/source.spec.ts	Extends source tests for defaultAuthor + new PUT endpoint coverage.
src/tests/alert.spec.ts	Adjusts alert serialization expectations to ignore defaultAuthor on nested source.
src/tests/signalement.spec.ts	Adjusts signalement serialization expectations to ignore defaultAuthor on nested source.

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