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James RussoandClaude Opus 4.8
5ebc5bb10f
#2066 fixed sub-composition data-variable-values on the render path for a single mount, but the reusable-template pattern from #2064 (the same sub-comp mounted multiple times with different values) still diverged from preview/snapshot: every mount shared one __hfVariablesByComp key and one CSS scope selector, so the last mount's values clobbered the earlier ones and all-but-one instance rendered blank. The producer now assigns per-instance runtime composition ids (assignBundledRuntimeCompositionIds) and threads hostIdentityMap into the shared inliner, mirroring the preview bundler. The shared inliner's default buildScopeSelector already scopes by the runtime id, and timelines remap to it via the scoping proxy, so each instance's variables, CSS, and timeline land under its own id. Pixel-verified end to end: two mounts of one sub-comp with different data-variable-values now render their own content (green CARD_A / blue CARD_B), matching snapshot; single-instance behavior is unchanged. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>