hemx/work/slices/SLICE-0015-infinite-scroll-standalone-page.md

id, type, status, parent, title, refs

id	type	status	parent	title	refs
SLICE-0015	slice	ready	NS-0004	Make infinite-scroll a real scroll-triggered standalone page	AGENTS.md REQUIREMENTS.md examples/html_examples/README.md examples/html_examples/src/main.rs examples/html_examples/templates/gallery.heml hemx-xtask/src/main.rs

Objective

Move infinite-scroll out of the crowded root gallery context and prove it as a standalone page where scrolling to a sentinel triggers loading more rows, instead of relying on a click-oriented Reveal more rows interaction.

Authority

• examples/html_examples/README.md labels infinite-scroll implemented and currently describes a revealed sentinel form that posts to the server-owned loading model.
• templates/gallery.heml currently renders infinite-scroll as one section in the root gallery with data-hemx-revealed="true" and a visible Reveal more rows button.
• AGENTS.md and REQUIREMENTS.md keep examples HTML-shaped, server-owned, progressive, and covered by focused browser smoke. req: htmx_equivalents/001 req: examples/012 req: test/006

Close when

• /infinite-scroll or the chosen same-origin slug route opens a focused page headed infinite-scroll.
• The page starts with enough vertical space/rows or sentinel placement that the user/browser can scroll to trigger the next batch.
• Loading more rows is primarily driven by the existing revealed/intersection behavior when the sentinel enters view; the smoke proves rows increase after scrolling, not after clicking a visible load-more button.
• A fallback submit control may exist only as progressive enhancement/recovery, but it must not be the primary proof path or make the example look like click-to-load.
• The server remains the owner of row count/state and returns generated keyed infinite_row effects; no selector-targeted rerendering or user-authored browser JavaScript is introduced.

Allowed files

• examples/html_examples/src/main.rs
• examples/html_examples/templates/app_shell.heml
• examples/html_examples/templates/gallery.heml or a new focused infinite-scroll .heml template under examples/html_examples/templates/
• examples/html_examples/templates/partials/loaded_row.heml only if a shared row partial remains the local generated-resource boundary
• examples/html_examples/README.md only to keep the matrix proof anchor honest
• hemx-xtask/src/main.rs for the scroll-based smoke proof
• REQUIREMENTS.md only if the behavior changes durable obligations

Verification

• cargo test -p hemx-html-examples
• cargo test -p hemx-xtask
• cargo run -p hemx-xtask -- html-examples-smoke
• redgate health --strict && redgate lint if REQUIREMENTS.md changes
• Manual check if needed: open the infinite-scroll page directly, scroll until the sentinel enters view, and confirm additional rows appear without clicking Reveal more rows.

Non-goals

• Do not implement virtual scrolling, pagination framework, client cache, or stored DOM patches.
• Do not make click-to-load scroll-triggered; it should remain the separate click example.
• Do not add bespoke browser JavaScript for this example when the runtime's revealed behavior can carry the proof.

Evidence

Ready; no implementation evidence yet.