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docs: v0.41.0 release — TLS, CSP, session memory leak, slow-client timeout, update checker, CLI file browser (561 tests) (#205)

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Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
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nesquena-hermes
2026-04-09 18:20:07 -07:00
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CHANGELOG.md
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---
## [v0.41.0] — 2026-04-10
### Features
- **Optional HTTPS/TLS support** (PR #199): Set `HERMES_WEBUI_TLS_CERT` and
`HERMES_WEBUI_TLS_KEY` env vars to enable HTTPS natively. Uses
`ssl.PROTOCOL_TLS_SERVER` with TLS 1.2 minimum. Gracefully falls back to HTTP
if cert loading fails. No reverse proxy required for LAN/VPN deployments.
### Bug Fixes
- **CSP blocking Mermaid and Prism** (PR #197): Added Content-Security-Policy and
Permissions-Policy headers to every response. CSP allows `cdn.jsdelivr.net` in
`script-src` and `style-src` for Mermaid.js (dynamically loaded) and Prism.js
(statically loaded with SRI integrity hashes). All other external origins blocked.
- **Session memory leak** (PR #196): `api/auth.py` accumulated expired session tokens
indefinitely. Added `_prune_expired_sessions()` called lazily on every
`verify_session()` call. No background thread, no lock contention.
- **Slow-client thread exhaustion** (PR #198): Added `Handler.timeout = 30` to kill
idle/stalled connections before they exhaust the thread pool.
- **False update alerts on feature branches** (PR #201): Update checker compared
`HEAD..origin/master` even when on a feature branch, counting unrelated master
commits as missing updates. Now uses `git rev-parse --abbrev-ref @{upstream}` to
track the current branch's upstream. Falls back to default branch when no upstream
is set.
- **CLI session file browser returning 404** (PR #204): `/api/list` only checked
the WebUI in-memory session dict, so CLI sessions shown in the sidebar always
returned 404 for file browsing. Now falls back to `get_cli_sessions()` — the same
pattern used by `/api/session` GET and `/api/sessions` list.
## [v0.40.2] — 2026-04-09
### Features

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static/index.html
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<body>
<div class="layout">
<aside class="sidebar">
<div class="sidebar-header"><div class="logo">H</div><div><h1 style="margin:0;font-size:15px;font-weight:700;letter-spacing:-.01em">Hermes</h1><div style="font-size:10px;color:var(--muted);opacity:.8;margin-top:1px">v0.40.2</div></div></div>
<div class="sidebar-header"><div class="logo">H</div><div><h1 style="margin:0;font-size:15px;font-weight:700;letter-spacing:-.01em">Hermes</h1><div style="font-size:10px;color:var(--muted);opacity:.8;margin-top:1px">v0.41.0</div></div></div>
<div class="sidebar-nav">
<button class="nav-tab active" data-panel="chat" data-label="Chat" onclick="switchPanel('chat')" title="Chat">&#128172;</button>
<button class="nav-tab" data-panel="tasks" data-label="Tasks" onclick="switchPanel('tasks')" title="Tasks">&#128197;</button>