docs(requirements): split push stream rows

Add explicit northstar ring fields to push requirements, split cross-origin stream guidance, and shorten SSE swap wording without changing behavior.

req: push/001

req: push/002

req: push/003

req: push/004

req: push/005

req: push/006

req: push/007

AGENTS.md

@@ -58,7 +58,7 @@ Keep it stable. Prefer pointers to canonical sources over copied structure, file
 - hemx core stays small: effects, typed ids, registries, and wire schema only; keep features in core only when they fit typed resources plus the closed EffectBatch op set, and treat DOM details as runtime lowering. Public identifiers should flow through typed wrappers over internal `ResourceId`/`ResourceRef`, not special-case opcodes. Wire output lowers symbolic authoring names to compact metadata and postcard/form-encoded envelopes, not JSON. ABI/schema versions and build fingerprints must guard runtime/server compatibility. req: laws/001 req: typed_id/001 req: typed_id/003 req: effect_algebra/001 req: effect_algebra/006 req: wire/001 req: wire/002 req: wire/003 req: wire/004 req: wire/005 req: wire/006 req: abi/001 req: abi/002 req: abi/003 req: abi/004 req: abi/005
 - Routing, auth, sessions, transport, transitions, sync, and storage belong in integration/user crates; hemx-axum preserves normal HTTP auth, credentials, CSRF, and progressive-enhancement semantics rather than defining policy in core. req: auth/001 req: auth/002 req: auth/003 req: auth/004 req: auth/005
 - Public examples and beginner APIs should use templates plus Rust, generated component APIs, resources, render/page helpers, and `IntoEffect`, not atoms, raw ids, selectors, wire formats, runtime opcodes, manual registries, `$OUT_DIR` includes, raw render/lower calls, or raw effect constructors; keep advanced layers out of starters. req: canonical_authoring/001 req: canonical_authoring/004 req: canonical_authoring/006 req: canonical_authoring/010 req: canonical_authoring/015 req: dx/001 req: dx/002 req: dx/010 req: component/003 req: component/004 req: public_api/001 req: public_api/002 req: public_api/003 req: public_api/005 req: public_api/006 req: progressive_disclosure/001 req: progressive_disclosure/002 req: progressive_disclosure/003
-- Typed partial swaps should stay expressed as generated target plus rendered partial plus swap kind, not selector-driven rerendering; HTTP, page navigation, push, and island behavior adapt around that loop, and docs should layer new primitives progressively. Preserve keyed/optional scope identity for addressable loop nodes and prefer generated keyed-slot helpers over low-level keyed calls. req: canonical_authoring/002 req: canonical_authoring/014 req: modes/001 req: scope/001 req: list/001 req: list/002 req: list/003 req: list/004 req: list/005 req: progressive_disclosure/004 req: page_swap/001 req: page_swap/002 req: page_swap/003
+- Typed partial swaps should stay expressed as generated target plus rendered partial plus swap kind, not selector-driven rerendering; HTTP, page navigation, push, and island behavior adapt around that loop, and docs should layer new primitives progressively. Push streams carry postcard EffectBatch over server-owned SSE/WebSocket transport and keep `data-hemx-sse` root-scoped/same-origin by default. Preserve keyed/optional scope identity for addressable loop nodes and prefer generated keyed-slot helpers over low-level keyed calls. req: canonical_authoring/002 req: canonical_authoring/014 req: modes/001 req: scope/001 req: list/001 req: list/002 req: list/003 req: list/004 req: list/005 req: push/001 req: push/002 req: push/003 req: push/004 req: push/005 req: push/006 req: push/007 req: progressive_disclosure/004 req: page_swap/001 req: page_swap/002 req: page_swap/003
 - `examples/html_examples` is the copy-paste HTML pattern gallery for htmx-style examples; keep exact htmx URL slugs visible while translating behavior to boring `.heml`, generated resources, and server-owned Rust state, not HTMX syntax or selector targeting. Boost containers enhance same-origin descendants only and preserve native external/download/new-tab behavior. req: htmx_equivalents/001 req: htmx_equivalents/003 req: htmx_equivalents/005 req: examples/007 req: page_swap/007 req: page_swap/008
 - Use `cargo run -p hemx-xtask -- app new PATH` for the generic page/form/keyed-row/notice starter, and `cargo run -p hemx-xtask -- app new --mobile PATH` for the phone-first starter with host capabilities, recovery truth, and release-kit commands; do not treat it as a mobile framework or store-submission bot. req: ceremony/005 req: ceremony/006 req: ceremony/007
 - The public component-reuse explanation lives in `docs/recipes/reusable-partials.md`; do not grow a client component framework to explain partial composition.