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Phase 7c+7d: cache invalidation + offline data layer

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7c: Client data cache management via element attributes
(sx-cache-invalidate) and response headers (SX-Cache-Invalidate,
SX-Cache-Update). Programmatic API: invalidate-page-cache,
invalidate-all-page-cache, update-page-cache.

7d: Service Worker (sx-sw.js) with IndexedDB for offline-capable
data caching. Network-first for /sx/data/ and /sx/io/, stale-while-
revalidate for /static/. Cache invalidation propagates from
in-memory cache to SW via postMessage.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-03-08 00:45:33 +00:00
parent 9a707dbe56
commit 0ce3f95d6c
7 changed files with 519 additions and 49 deletions
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24
shared/sx/ref/engine.sx
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@@ -154,17 +154,19 @@
;; Extract all SX response header directives into a dict.
;; get-header is (fn (name) → string or nil).
(dict
"redirect" (get-header "SX-Redirect")
"refresh" (get-header "SX-Refresh")
"trigger" (get-header "SX-Trigger")
"retarget" (get-header "SX-Retarget")
"reswap" (get-header "SX-Reswap")
"location" (get-header "SX-Location")
"replace-url" (get-header "SX-Replace-Url")
"css-hash" (get-header "SX-Css-Hash")
"trigger-swap" (get-header "SX-Trigger-After-Swap")
"trigger-settle" (get-header "SX-Trigger-After-Settle")
"content-type" (get-header "Content-Type"))))
"redirect" (get-header "SX-Redirect")
"refresh" (get-header "SX-Refresh")
"trigger" (get-header "SX-Trigger")
"retarget" (get-header "SX-Retarget")
"reswap" (get-header "SX-Reswap")
"location" (get-header "SX-Location")
"replace-url" (get-header "SX-Replace-Url")
"css-hash" (get-header "SX-Css-Hash")
"trigger-swap" (get-header "SX-Trigger-After-Swap")
"trigger-settle" (get-header "SX-Trigger-After-Settle")
"content-type" (get-header "Content-Type")
"cache-invalidate" (get-header "SX-Cache-Invalidate")
"cache-update" (get-header "SX-Cache-Update"))))
;; --------------------------------------------------------------------------