fix(omp): correct docs/counts/URLs, resolver install-path order, stray comment + CSS

Small cleanup items from upstream review (Ark0N/Codeman#353):

- OMP_SEARCH_DIRS now leads with ~/.local/bin, matching omp.sh's real
  installer target (~/.omp/bin was an earlier unverified guess, confirmed
  wrong against a real --no-cache Docker build).
- docs/omp-integration.md: fixed the dead GitHub URL (can1357/omp ->
  can1357/oh-my-pi), corrected the CLI count (ninth backend, tenth
  SessionMode incl. shell -- not eighth), matched the install-path guidance
  to the resolver fix, updated the version example to the actually-tested
  18.0.8, and added a Docker-section caveat: --resume pinning does not
  currently reach an in-container omp process, since Docker panes never see
  ompConfig.
- docs/architecture-invariants.md: fixed a heading missing ", OMP" (CLAUDE.md
  already linked to the -omp anchor, so the link was dead) and added an OMP
  specifics paragraph -- the one external CLI missing an entry in this doc.
- .changeset/omp-backend.md: corrected the sibling-CLI list (was missing Pi,
  Grok, and DeepSeek Harness) and the backend count.
- Removed a stray orphaned comment fragment in the quick-start docker branch
  and split two CSS lines that had two declarations jammed onto one line.

src/utils/omp-cli-resolver.ts

@@ -23,10 +23,16 @@ import {
   type CliResolverHost,
 } from './cli-executable-resolver.js';
 
-/** Common directories where the OMP CLI binary may be installed */
+/**
+ * Common directories where the OMP CLI binary may be installed. `~/.local/bin`
+ * leads: omp.sh's installer targets `$HOME/.local/bin` with no `--dir`
+ * override (verified against a real `--no-cache` Docker build — see
+ * docker/agent.Dockerfile); `~/.omp/bin` was an unverified guess that turned
+ * out wrong, kept after `~/.local/bin` only as a defensive fallback.
+ */
 const OMP_SEARCH_DIRS = [
-  join(homedir(), '.omp', 'bin'),
   join(homedir(), '.local', 'bin'),
+  join(homedir(), '.omp', 'bin'),
   '/usr/local/bin',
   join(homedir(), '.bun', 'bin'),
   join(homedir(), '.npm-global', 'bin'),