docs: docs website + installation (#778)

* feat: WIP doc (vibe started and iterated)

* install from scratch docs

* caddyfile.example

* gitignore

* authentik script

* authentik script

* authentik script

* llm doc

* authentik ongoing

* more daily setup logs

* doc website

* gpu self hosted setup guide (no-mistakes)

* doc review round

* doc review round

* doc review round

* update doc site sidebars

* feat(docs): add mermaid diagram support

* docs polishing

* live pipeline doc

* move pipeline dev docs to dev docs location

* doc pr review iteration

* dockerfile healthcheck

* docs/pr-comments

* remove jwt comment

* llm suggestion

* pr comments

* pr comments

* document auto migrations

* cleanup docs

---------

Co-authored-by: Mathieu Virbel <mat@meltingrocks.com>
Co-authored-by: Igor Loskutov <igor.loskutoff@gmail.com>

docs/TODO.md

@@ -0,0 +1,48 @@
+# Documentation TODO - PR #778 Review Comments
+
+Remaining items from Tito's review. See CHANGES.md for completed items.
+
+---
+
+## Remaining Items
+
+| File | Issue | Priority | Notes |
+|------|-------|----------|-------|
+| ~~`intro.md:10`~~ | ~~Add screenshots~~ | ~~Low~~ | ✅ **DONE** - Added transcript view screenshot |
+| `file-pipeline.md:47` | chunk_size example shows 30s | Low | Unclear what example config should show (~16s actual) |
+| ~~`self-hosted-gpu-setup.md:235`~~ | ~~systemd template in repo~~ | ~~Medium~~ | ✅ **REMOVED** - Systemd support removed entirely |
+| ~~`installation/overview.md:85`~~ | ~~uv tool install~~ | ~~Low~~ | ✅ **DONE** - Changed to `uv tool install modal` |
+| ~~`installation/overview.md:101`~~ | ~~"Why systemd?"~~ | ~~Low~~ | ✅ **REMOVED** - Systemd support removed entirely |
+| `installation/overview.md:271` | Caddyfile copy removal | Low | Keeping for clarity |
+
+---
+
+## Skipped (Decided Not To Fix)
+
+| File | Issue | Reason |
+|------|-------|--------|
+| `installation/overview.md:40` | Model size requirements | Uncertain about exact requirements |
+| `installation/overview.md:136` | WebRTC ports | Handled by Daily/Whereby, not us |
+| `installation/overview.md:136` | Security section | Risk of incomplete/misleading docs |
+| `installation/overview.md:179` | AWS setup order | Low priority, works as-is |
+| `installation/overview.md:410` | Redundant next steps | Issue doesn't exist (file ends at 401) |
+
+---
+
+## Completed
+
+See CHANGES.md for full list. Summary:
+
+### Removals (9)
+- Encrypted data storage, session management, analytics claims
+- "coming soon" GPU, 30-second segments, CPU optimization
+- Encryption at rest, manual migrations, modprobe commands
+
+### Fixes (9)
+- WebRTC + Daily/Whereby, 4 API endpoints, Docker docs link
+- NVIDIA steps merged, compose.yml referenced, cross-reference duplicate
+- tee→nano, MOV format, troubleshooting link
+
+### Previously Fixed (7)
+- Blog removal, Daily.co added, rate limiting removed (x2)
+- PII claim removed, python→yaml, LUFS removed