chore: apply cargo fmt across workspace and update docs

- Run cargo fmt on all Rust crates for consistent formatting
- Update CLAUDE.md with WASM plugin commands and dev.ps1 instructions
- Update wiki: add WASM plugin architecture, rewrite dev environment docs
- Minor frontend cleanup (unused imports)

crates/erp-server/migration/src/m20260412_000021_create_tasks.rs

@@ -11,12 +11,7 @@ impl MigrationTrait for Migration {
                 Table::create()
                     .table(Tasks::Table)
                     .if_not_exists()
-                    .col(
-                        ColumnDef::new(Tasks::Id)
-                            .uuid()
-                            .not_null()
-                            .primary_key(),
-                    )
+                    .col(ColumnDef::new(Tasks::Id).uuid().not_null().primary_key())
                     .col(ColumnDef::new(Tasks::TenantId).uuid().not_null())
                     .col(ColumnDef::new(Tasks::InstanceId).uuid().not_null())
                     .col(ColumnDef::new(Tasks::TokenId).uuid().not_null())