[PierreRaybaut]

Plugin SDK for DataLab desktop: stable plugin identities, plugin-owned computations, headless recipes, packaged examples, an Applications catalog, welcome page tiles and a plugin project generator. Validated with the Camera and Pulse characterization pilots.

Contents

• Stable plugin identity: PLUGIN_INFO.id (with a module/class fallback for legacy plugins), typed capabilities, enablement stored by ID with migration of legacy names, and plugin discovery through the datalab.plugins entry point group.
• Plugin-owned computations: register_computations() hook, feature IDs of the form <plugin_id>:<local_id>, automatic removal on disable/reload/uninstall, and rollback if registration fails.
• Headless recipes: versioned, typed recipe contracts, a transactional Desktop recipe runner, and recipe run provenance stored in output metadata.
• Examples and Applications: packaged and generated plugin examples, and a non-modal top-level Applications catalog (recipes, examples, launchers).
• Welcome page tiles: application plugins add tiles to a new Applications section at the top of the welcome page. By default, one tile per plugin (name, description and PluginInfo.icon) opens its page in the catalog; plugins may declare several WelcomeTile values in WELCOME_TILES, each with an optional package:path icon and launcher method. The section keeps a configurable number of rows (two by default): applications come pinned first, then recently used, then by name, may be hidden, and a last tile opens the catalog for those left out. Secondary tiles are shown when there is room and otherwise move to the menu of the main tile; the catalog gains a search field and the same welcome page options. Tiles refresh when plugins are loaded, reloaded or disabled; launcher errors are reported without closing DataLab.
• Plugin icons: PluginInfo.icon is shown in the Applications catalog, on welcome page tiles and in the Configure plugins... dialog; plugins without icon use a generic one.
• Plugin project generator: datalab-plugin create produces a layered project (core / workflow / adapters) with tests, docs and Ruff-clean code.
• Large campaigns: batched object loading and refresh for HDF5 workspaces and multi-object recipe results.

Merges with develop

develop was first merged in 49a3835 after two preparatory PRs (#372 deterministic feature lookup, #373 Qt 6 preview test fix) and SigimaX PR DataLab-Platform/SigimaX#7 (qthelpers fixes previously carried by this branch).

• Feature identity follows develop's naming: built-in feature IDs are function names; plugin feature IDs are namespaced by their owner plugin (or module for legacy unowned plugins). The computing registry is keyed by ID.
• Metadata, History recording and replay, re-processing and analysis recomputation all carry the feature ID, so plugin features that reuse a built-in function are never confused with the built-in.
• Follow-up fixes: calc and the Web API only fall back to another panel when a feature is not found; deleting a plugin analysis result clears its parameters; owned features record their plugin as origin.
• SDK release notes moved to 1.4; French UI and documentation catalogs are complete (no empty or fuzzy entries).

develop was merged again in f783180 to bring the welcome page (#375), on which the welcome page tiles build, and in 9d6ace0 to bring the welcome page shown whenever the current panel is empty (#376).

Validation

• Full test suite: 741 passed, 3 skipped.
• Camera pilot: 132 passed; Pulse pilot: 82 passed. Their feat/plugin-sdk-implementation branches add dedicated SVG icons; Camera relies on the default tile, Pulse declares two tiles (application page and demo campaign).

Assisted-by: Claude Opus 5.5