Release Time Tools 0.1.0

docs/ACCESSIBILITY.md

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+# Accessibility
+
+The workbench uses semantic landmarks, headings and labelled native controls, supports keyboard operation, visible focus, reduced-width layouts, and system/light/dark themes through the Toolbox shell. Results do not rely on colour alone.

docs/ARCHITECTURE.md

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+# Architecture
+
+Time Tools is a static React/Vite application wrapped in the shared Toolbox shell. Its pure modules separate exact epoch parsing, named-zone resolution/transition inspection, calendar-versus-elapsed arithmetic, bounded recurrence preview, business-day calculation and UTC iCalendar generation.
+
+`temporal-polyfill` supplies Temporal semantics while the browser runtime supplies IANA time-zone data. Croner handles explicitly selected 5/6/7-field cron syntax; `rrule-temporal` parses strict RFC 5545 recurrence rules with bounded iterations/candidate evaluations. iCalendar export resolves one named-zone wall time and writes escaped/folded UTC DTSTART/DTEND fields rather than an incomplete `VTIMEZONE`.
+
+Version 0.1 operations are synchronous and bounded, so the app creates no worker and has no persistence or server API. Relative entry and asset URLs keep the build relocatable below a nested portal path.

docs/PRIVACY-SECURITY.md

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+# Privacy and security
+
+Time values, schedules and calendar fields stay in page memory. There is no telemetry, analytics, account, persistence or runtime network path. Exported ICS text is escaped and UTF-8 line-folded; users choose whether to download/import it into another application.
+
+Epoch input uses signed integer arithmetic and rejects exponent/fraction syntax. Recurrence output is limited to 1,000 occurrences, RRULE evaluation uses hard iteration/candidate bounds, business-day movement is limited to ±100,000 days, and explicit holidays to 10,000 bounded ISO dates. Calendar text fields and zone/duration inputs are length-bounded before parsing.
+
+Named-zone results depend on the IANA data supplied by the browser/runtime and can vary across versions. Temporal does not represent leap seconds. Cron semantics vary by implementation; the selected field count and common Unix day-of-month/day-of-week OR rule are shown. Business days mean Monday–Friday minus only the dates entered, not a regional legal calendar.