Backfill the two regression gaps flagged on master after the recent
hostname-title and tmux-flicker fixes shipped without server-side
assertions.
* test/server-index-title.test.ts (8 tests) — exercises WebServer's
index.html templating path: default os.hostname(), --title-hostname
override, HTML-escape against `<script>`-style breakout, ampersand
non-double-encoding, exact-once substitution, and byte-identical
template-tail invariance.
* test/tmux-window-size-query.test.ts (15 tests) — mocks
child_process.execFileSync and walks the helper through the
browser-resize-between-attaches happy path, query-then-die race,
zero/negative/empty/non-numeric output, plus argv-form/timeout
assertions to lock down the no-shell-interpolation guarantee.
* src/session.ts — extracts the inline 14-line tmux size query into
a named `queryTmuxWindowSize()` export so the test surface is a
pure function. Behavior unchanged.
* src/web/public/notification-manager.js — Browser Notification API
(layer 3) now uses `${this.originalTitle}: ${title}` so OS-level
desktop pop-ups carry the same `codeman:<host>` prefix that the
tab title and Web Push payloads already do, finishing the
hostname plumb-through started in #82.
* CLAUDE.md, README.md — document the dual-CLI env-prefix discipline
(CLAUDE_CODE_* vs OPENCODE_*), expand the xterm-zerolag-input
duplication gotcha to mention the published-package side-effect,
and note that the hostname prefix now applies uniformly to tab
title, tab-flash, and OS notifications.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
