refactor(saas): make navigation and status idiomatic

Use a real enhanceable Settings URL, remove response-simulated navigation, and replace the one-shot public SSE endpoint with an initial canonical event plus ongoing server-owned updates. Keep a bounded one-event probe for production-reference tests.

req: examples/014

req: nav/001

req: nav/002

req: nav/004

req: push/003

PLAN.md

@@ -1,41 +1,21 @@
-# Active frontier — v1 production readiness
+# Active frontier — peak idiomatic examples
 
-**Parent outcome**
+**Parent ID:** `examples-idiom/001`
 
-- **User value:** Rust teams can adopt hemx v1 knowing its public contracts, failure recovery, compatibility, dependency policy, and release proof are explicit and reproducible.
-- **State:** In progress — the product and representative runtime/browser/performance/security paths are implemented, but v1 production readiness is not yet closed.
-- **Blocked by:** the repository owner must approve a distribution license policy before the legal release gate can close; this does not block mutation hardening or local release verification.
-- **Non-goals:** no new framework surface, second wire format, WASM runtime decoder, deployment, publication, signing, store submission, or feature expansion.
-- **Proof:** every child below is done; `docs/v1-readiness.md` reports GO without contradicting `REQUIREMENTS.md`; the tree is committed and clean.
+- **User value:** A newcomer can move from first app to production reference and advanced integration while seeing one coherent hemx model: plain `.heml`, generated resources, typed Rust handlers/effects, real links/forms/URLs, server-owned truth, native fallback, and explicit leaf adapters.
+- **State:** Ready — the canonical starter and Workout exemplar are already strong; bounded teaching leaks remain in the HTML gallery, client-local example, SaaS reference, and advanced Kanban boundary.
+- **Non-goals:** no new framework primitives, client router, VDOM, selector authoring API, reactive expression language, global client store, CSS framework/design system, generalized asset pipeline, visual redesign, or feature expansion. Do not churn `examples/workout` or `examples/techdemo` without a concrete failing contract.
+- **Build:**
+  - **`examples-idiom/002` — Done: the SaaS reference tells the production truth.** Settings is a real `/settings` link enhanced by the existing page-swap runtime, direct `/settings` renders the fallback page, and `/events` now sends an initial canonical batch followed by ongoing server-owned status updates; `?once` remains only as a bounded production-reference probe. The removed handler no longer simulates navigation with response effects. Raw selector/form construction remains confined to test adapters because generated handles are the asserted boundary, not an app authoring API. req: canonical_authoring/001 req: nav/001 req: nav/002 req: nav/004 req: push/003 req: examples/003 req: examples/004 req: examples/014
+  - **`examples-idiom/003` — Make the HTML pattern gallery mechanically copyable.** In `examples/html_examples/src/main.rs`, generated `gallery` resources, and nearby templates/tests, express the dependent-select flow through typed generated values/partials instead of duplicated string-to-option mapping, and remove request fields discarded only to satisfy example plumbing where the generated handler contract permits it. Preserve each visible htmx slug, native form semantics, server-owned state, inserted-content behavior, and no-reload smoke. req: htmx_equivalents/001 req: htmx_equivalents/003 req: htmx_equivalents/005 req: canonical_authoring/001 req: form/004
+  - **`examples-idiom/004` — Make client-local code visibly a leaf adapter.** In `examples/client_local/src/lib.rs` and its `.heml` surface, project the generated client event/state into a tiny typed counter-domain input/output instead of rendering raw event kind and encoded state as the example's product value. Keep the ordinary `#[hemx::handler(client)]` shape, generated event/state boundary, native event semantics, and no durable client state graph. req: client_local/001 req: client_local/003 req: client_local/004 req: canonical_authoring/017
+  - **`examples-idiom/005` — Separate the advanced Kanban adapter from ordinary hemx app code.** Move the cohesive sync/presence/session/storage transport responsibility from `examples/kanban/src/main.rs` behind one clearly named local integration module with a small route/state contract; keep board templates and ordinary handlers nearby and unchanged where possible. Update `examples/kanban/README.md` to label the fixture as the advanced local/offline/sync north-star, route beginners to the starter/Workout/gallery first, and name legacy `/sync-demo`/`sync.js` as a compatibility probe rather than recommended authoring. Preserve replay, export, deletion, reconnection, auth, and multiplayer browser proof. req: state/001 req: state/002 req: local/001 req: local/002 req: milestone/001 req: sync/001 req: sync/008
+  - **`examples-idiom/006` — Publish and enforce the example ladder.** In `README.md`, example READMEs, and the nearest existing xtask/example checks, identify `app new`/`examples/v0` as the first canonical app, `html_examples` as the pattern gallery, Workout as the product exemplar, SaaS as the production integration reference, `client_local` as the narrow leaf-adapter proof, Techdemo as exhaustive verification, and Kanban as advanced north-star integration. Add the smallest repository-owned guard that fails when beginner/reference authoring regresses to raw IDs, selectors, raw wire/effect constructors, `$OUT_DIR` includes, or app-authored DOM mutation; keep legitimate advanced/test adapters scoped rather than banning tokens globally. req: examples/001 req: examples/003 req: examples/004 req: examples/005 req: examples/007 req: examples/008 req: examples/009 req: canonical_authoring/001 req: progressive_disclosure/001 req: progressive_disclosure/002 req: progressive_disclosure/003
+- **Blocked by:** none. The separate v1 legal release gate remains blocked on the owner license decision but does not block example work.
+- **Proof:** each slice must make its user path observable, preserve the named native/recovery path, and pass its focused package/browser proof. Parent closure requires `cargo run -p hemx-xtask -- html-examples-smoke`, `cargo run -p hemx-xtask -- workout test`, focused SaaS/client-local/Kanban package tests, `cargo run -p hemx-xtask -- test`, `cargo check --workspace`, `cargo fmt --check`, `redgate list`, `redgate refs`, and a clean diff. Frustration signals to reject: a beginner must author selectors/raw IDs/wire ops; navigation loses URL/history; JavaScript becomes durable truth; an example claims live/recovery behavior with a one-shot stub; or advanced sync machinery appears to be the default app model.
 
-## 1. Checkpoint the current robustness slice
+## Blocked release decision retained
 
-- [x] **State:** Done — committed as the current robustness slice after full workspace, focused compile-fail, requirements-reference, formatting, and check proof.
-- **User value:** users receive one explicit typed `EffectBatch` codec and stronger fail-closed form, sync, host, WASM, macro, test-harness, and generated-contract boundaries without parallel magic.
-- **Build:** review the current diff as one coherent behavior/requirements slice; retain the canonical non-WASM `EffectBatch` codec and remove the duplicate postcard batch API; keep only mutation-driven tests and simplifications that prove public behavior; run the full local test authority; commit the slice.
-- **Blocked by:** none.
-- **Proof:** `cargo run -p hemx-xtask -- test`, `cargo fmt --check`, `cargo check --workspace`, `redgate list`, and `redgate refs` pass; `git diff --check` is clean; the focused mutest receipts for the effect codec, `hemx`, `hemx-host`, `hemx-js`, `hemx-wasm`, `hemx-sync`, `hemx-sync-macros`, `hemx-test` public helpers, and `hemx-axum` form/SSE codecs contain no missed mutants; one Conventional Commit records the requirement IDs.
-
-## 2. Make mutation testing a reproducible release gate
-
-- [x] **State:** Done — the package-native capped xtask entry point rejects unknown packages and invalid shards, propagates mutest failure, and every mutation-applicable library/proc-macro package passes its complete gate or deterministic shard set with no unexplained survivor.
-- **User value:** maintainers can run one bounded repository command and trust that meaningful Rust logic across every mutation-applicable library is either killed or explicitly justified.
-- **Build:** add a capped `hemx-xtask` mutation command that invokes `/opt/repositories/mutest`/`mutest` through package-native test targets rather than the broken workspace-wide example path; enumerate only current mutation-applicable library/proc-macro packages; finish adversarial tests or simplify code until every survivor is classified; keep equivalent, invariant-only, and infrastructure-inapplicable classifications inspectable and minimal; document the exact local release command in the existing readiness surface.
-- **Blocked by:** none. `hemx-lsp` is binary-only and deliberately outside the mutation-applicable library/proc-macro set elected by test/020; its package tests remain in workspace verification. The runner creates first-use shard output parents, accepts validated one-based shards, maps them to native zero-based shards, uses shard-specific output, grants compiler probes a 120-second floor, and preserves the unsharded gate. Browser-backed `hemx-wasm` runs one mutest worker without a parent jobserver, preventing nested Cargo/Firefox deadlock while preserving the detected Cargo budget; its four shards pass with 59 mutants (52 caught, 7 unviable) after replay projections were batched without changing ordered effect application, Firefox background work was disabled, and the explicit 64-command debug-browser replay budget was set to 250 ms. The complete `hemx` (30 mutants), `hemx-host` (76), `hemx-sync` (164), `hemx-sync-macros` (33), `hemx-axum` (470), `hemx-build` (1,304), and `hemx-derive` (480) gates or deterministic shard sets pass, alongside the previously clean `hemx-core`, `hemx-js`, and `hemx-test` gates.
-- **Proof:** the new xtask mutation command exits zero within its documented bound, covers each applicable package, emits no unexplained missed mutant, and a deliberate adjacent mutation makes it fail. `cargo run -p hemx-xtask -- test` remains green. req: test/020 req: test/021
-
-## 3. Elect and enforce the release license policy
-
-- [ ] **State:** Needs decision
-- **User value:** adopters can legally evaluate and redistribute hemx with a machine-checked dependency license boundary.
-- **Build:** owner chooses the repository distribution license and accepted dependency licenses; add the corresponding root license file(s) and minimal `deny.toml`; classify workspace crates and the current dependency set; run strict license, advisory, and source checks; reject unknown/unlicensed dependencies rather than silently broadening policy.
-- **Blocked by:** owner legal decision: choose the repository license and whether weak-copyleft dependencies are acceptable. Current dependency licenses observed by `cargo deny list` include Apache-2.0, Apache-2.0 WITH LLVM-exception, BSD-3-Clause, BSL-1.0, MIT, Unicode-3.0, Unlicense, plus unlicensed workspace packages because the repository has no elected license.
-- **Proof:** `cargo deny check licenses advisories sources` exits zero from repository configuration; every allowed license is explicit; the repository license is visible at the root; adding a disallowed/unlicensed fixture fails the gate. req: security/007 req: v1_release/006
-
-## 4. Issue the final v1 GO/NO-GO decision
-
-- [ ] **State:** Blocked by slices 1–3
-- **User value:** users get an honest release candidate whose documented support, recovery, accessibility, performance, examples, and operational behavior match what was actually proven.
-- **Build:** rerun the complete local release matrix from `docs/v1-readiness.md`, including mutation and license gates; verify the pinned Rust/browser/WASM/Axum compatibility matrix and migration fixture; run browser, offline/reconnect, mixed-deploy recovery, accessibility, security, performance, docs, and canonical-example proofs; independently audit requirement-to-proof coverage and README/readiness contradictions; fix only release-blocking defects; mark GO only when no P0/P1 or unexplained gate failure remains.
-- **Blocked by:** slices 1–3; publishing/deployment authority remains separate and is not required for a local GO decision.
-- **Proof:** all commands in `docs/v1-readiness.md` pass from a clean checkout within documented bounds; `redgate list` and `redgate refs` pass; known installed `redgate health`/`lint` corpus-format warnings are either resolved or accurately documented rather than hidden; `docs/v1-readiness.md` says GO and names zero open release blockers; independent contradiction review agrees. req: v1_release/001 req: v1_release/002 req: v1_release/003 req: v1_release/004 req: v1_release/005 req: v1_release/006 req: v1_release/007 req: v1_release/008 req: v1_release/009 req: v1_release/010
+- [ ] **State:** Needs decision — choose the repository distribution license and approved third-party SPDX set, then add root license file(s), workspace package metadata, `deny.toml`, and rerun the release matrix.
+- **Blocked by:** owner/legal authority. Current third-party set includes Apache-2.0, Apache-2.0 WITH LLVM-exception, BSD-3-Clause, BSL-1.0, MIT, Unicode-3.0, and Unlicense; all 20 workspace packages currently lack license metadata.
+- **Proof:** `cargo deny check advisories sources licenses` and the full `docs/v1-readiness.md` matrix pass, then readiness changes from NO-GO to GO without publication or deployment.