Support write operations (PUT/PATCH) for data islands

[melvincarvalho]

Summary

Currently solidos-lite only handles read operations by intercepting fetcher.load(). To complete the Solid experience, we need to support write operations.

Background

In Solid, persistence is core - you edit, it saves. Data islands should support this paradigm.

Proposed Approaches (incremental)

Phase 1: Client-side persistence

• Intercept PUT/PATCH for current page
• Update <script type="text/turtle"> in DOM
• Persist to localStorage (survives refresh)

Phase 2: Download/export

• Serialize updated HTML with modified data island
• Offer "Save As" to download the file

Phase 3: Server bridge

• Translate writes to raw Turtle PUT/PATCH
• Works with existing Solid servers
• Server stores .ttl, solidos-lite wraps in HTML

Phase 4: Native server support

• Servers understand HTML+data island as first-class resource
• True persistence without translation

Technical Notes

mashlib uses fetcher.webOperation() for writes - this would need interception similar to how we intercept fetcher.load() for reads.

Related

Eventually data islands should be first-class in Solid servers, eliminating the need for client-side bridges.