opencode: SearXNG search MCP, LSP tool, Gitea MCP in oc-local

searxng-mcp.py is a stdlib-only stdio MCP server with one web_search tool
against search.rcjohnstone.com. It is in both profiles and asks first on
oc-work.

lsp: true in opencode.json, and the launcher sets
OPENCODE_EXPERIMENTAL_LSP_TOOL and OPENCODE_DISABLE_LSP_DOWNLOAD.

The launcher adds gitea-mcp to oc-local through OPENCODE_CONFIG_CONTENT when
the binary and GITEA_MCP_TOKEN exist, limited to 15 tools.
gitea_issue_write asks.

common/zsh/opencode.zsh

@@ -84,11 +84,24 @@ _oc_launch() {
   print -u2 "${colour}┌─ opencode profile: ${(U)profile} ─┐\e[0m"
   printf '\e]0;opencode [%s]\a' "$profile"
 
+  # Gitea MCP: oc-local only, and only where the binary and token exist.
+  # --tools keeps 15 of its 61 tools; each one is sent with every request.
+  local extra=""
+  if [[ $profile == local ]] && (( $+commands[gitea-mcp] )) && [[ -n $GITEA_MCP_TOKEN ]]; then
+    local tools=get_me,search_repos,list_my_repos,search_issues,list_issues,issue_read,issue_write,label_read,list_pull_requests,pull_request_read,get_file_contents,get_dir_contents,list_commits,get_commit,actions_run_read
+    extra='{"mcp":{"gitea":{"type":"local","enabled":true,"command":["gitea-mcp","-t","stdio","--host","https://git.rcjohnstone.com","--tools","'$tools'"],"environment":{"GITEA_ACCESS_TOKEN":"{env:GITEA_MCP_TOKEN}"}}}}'
+  fi
+
+  # Never set OPENCODE_EXPERIMENTAL=true for the LSP tool: that umbrella flag
+  # also enables the built-in websearch, which sends queries to Exa.
   # OpenCode detects its install method with `npm list -g` and upgrades with
   # `npm install -g`; both use nvm's prefix unless pointed at this one.
   LITELLM_KEY="$key" \
   OPENCODE_PROFILE="$profile" \
   OPENCODE_CONFIG="$cfg" \
+  OPENCODE_CONFIG_CONTENT="$extra" \
+  OPENCODE_EXPERIMENTAL_LSP_TOOL=true \
+  OPENCODE_DISABLE_LSP_DOWNLOAD=true \
   npm_config_prefix="${OPENCODE_BIN:h}" \
     command opencode "$@"
 }