Update Unified Storage: group exclusions

[OwendB1]

Adds an Add exclusion action to existing inventory groups. Players can, as an example, exclude a refinery-based shield generator by block definition while keeping ordinary refineries in the group. Exclusions override include rules only in the edited group, including transfers and loadouts using that group; other groups and ship-wide automation remain independent.

Pins Unified Storage from 82744543a554c006e3cc0c146d05030857b5a6c9 to 0626801a968b3314661153a928016ffc04800dd9.

• Supports definition, specific-block and named-terminal-group selectors, with optional role/item filters and buffered Save rule → Apply editing.
• Migrates existing group profiles to schema 3. Companion-backed actions and profile exchange require the new GroupExclusions capability; older companions retain ownership coordination while transfers fall back to standalone operation. This PR updates the client registry only.
• Client and server Release builds, core checks and PluginHub XML validation passed. In-game UI and shield-generator acceptance checks remain pending in the source test matrix.

Source diff