store, web: cite the source of what they rely on (assumptions part D)

Comments only, no behaviour changed. modernc.org/sqlite v1.60.1 (the
_pragma list on every connection, busy_timeout first; extended result
codes; a deferred BEGIN; multi-statement Exec) and SQLite 3.53.4's
documentation (transactions, WAL, foreign keys, NOCASE, upsert, julianday,
partial indexes); htmx 2.0.4 src/htmx.js; the Fetch and HTML standards for
Sec-Fetch-Site, Origin, SameSite, __Host-, CSP and defer order; Go's
html/template. Comments the source contradicts are corrected - the driver
does not serialise writes (SetMaxOpenConns(1) does), htmx:load fires per
swapped element, no-store does not keep a page out of history.

Left for their own commits: D-S3 a migration two processes can both run,
D-S20 recipient case, D-B3 Origin: null under Referrer-Policy: no-referrer,
D-H5/H6/H7/H9 (audit M11, stage 4).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/view/templates/layout.html

@@ -32,7 +32,11 @@
      the head for the request-indicator classes. The panel uses no
      hx-indicator, and that injected element would be the one thing the
      Content-Security-Policy has to make an exception for, so it
-     is switched off here. */}}
+     is switched off here. htmx 2.0.4, src/htmx.js: the ready handler runs
+     mergeMetaConfig() before insertIndicatorStyles(), which adds the element
+     only while includeIndicatorStyles is not false. Both scripts are defer:
+     they run in this order once parsing ends and before DOMContentLoaded
+     (HTML Living Standard, parsing.html#the-end). */}}
 <meta name="htmx-config" content='{"includeIndicatorStyles":false}'>
 <script src="/static/htmx.min.js" defer></script>
 <script src="/static/panel.js" defer></script>