docs: rebuild KB in OKF v0.1 with live-verified facts

Copy of the legacy ~/.pi/agent/docs tree rebuilt as the command-center
knowledge base: concept files promoted to path identity, index listings
stripped of frontmatter, all wikilinks/relative links resolved, every
checkable claim verified against the live fleet (Dankserver = Ryzen 7
7700X + RTX 3090; Strix Halo is Dankclaw), unverifiable claims tagged.
kb-lint exits 0.

omp-docs/tools/niri/tips.md

@@ -0,0 +1,41 @@
+---
+type: howto
+title: Niri Tips and Gotchas
+description: Practical tips for working with niri — Mod key behavior, shell expansion, config reload, vim keys, and programmatic invocation.
+tags:
+  - niri
+  - tips
+  - gotchas
+verified: 2026-08-28
+---
+
+# Helpful Tips
+
+## 1. Mod key
+
+Use `Mod` instead of `Super` for configs that work both on TTY and in nested windows.
+
+## 2. No shell expansion in spawn
+
+`spawn` does not expand `$VAR` or `~`. Use `spawn-sh` or wrap in `sh -c`.
+
+## 3. Config reload
+
+niri supports live-reloading config without restart.
+
+## 4. Alternative navigation
+
+Vim-like keys (H/J/K/L) are bound by default alongside arrow keys.
+
+## 5. Programmatic invocation
+
+Every action can be invoked via `niri msg action <action-name>`.
+
+## 6. Find XKB keys
+
+Use `wev` to discover key names.
+
+## Related
+
+* [Key Bindings Syntax](/tools/niri/key-bindings-syntax.md) — Configuration details
+* [Action Reference](/tools/niri/action-reference.md) — All available actions