hub: serve apropos + wake_fleet (fleet-central tools) alongside remote_*

Consolidate the two fleet-central local tools (stash recall + pve WoL) onto
the hub broker so :8090 is a complete fleet-management endpoint. They run
locally on hertz via a new run_local() helper (no ssh backend hop). Still
also served by hertz-tools (:8080) for now; the hertz-side removal is the
follow-up once every client (pi-agents) has a @hub session.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EWpfhDgYNA21tETDP9ueBE

hub.lua

@@ -631,6 +631,62 @@ server:tool("remote_search_files", "find-by-pattern on a fleet host.",
     } }
 )
 
+-- ---- Fleet-central local tools (migrated from tools.d/hertz.lua, 2026-07-18) ----
+-- These run LOCALLY on hertz (where the hub process also lives), so no ssh
+-- backend hop. Consolidated here so the hub is the single fleet-management
+-- endpoint. Still also served by hertz-tools (:8080) for now — remove there
+-- once every client (pi-agents etc.) has a @hub session.
+local function run_local(cmd, timeout)
+    local full = timeout and ("timeout " .. tostring(timeout) .. " " .. cmd) or cmd
+    local p = io.popen(full .. " 2>&1")
+    if not p then return "Error: popen failed" end
+    local out = p:read("*a")
+    p:close()
+    return out or ""
+end
+
+server:tool("apropos",
+    "Search shared fleet memory (stash) for facts about the fleet, projects, decisions, and preferences. query = 2-6 words on the topic; limit = max results (default 3). Read-only.",
+    { type = "object", properties = {
+        query = { type = "string",  description = "2-6 words describing what to recall" },
+        limit = { type = "integer", description = "max results, default 3" },
+    }, required = { "query" } },
+    function(a)
+        local q = tostring(a.query or ""):gsub("[^%w%s%-%.]", " "):gsub("%s+", " ")
+        if q:gsub("%s", "") == "" then return "Error: query required" end
+        local lim = tonumber(a.limit) or 3
+        return run_local("python3 /opt/lmcp/helpers/stash_recall.py '" .. q .. "' " .. lim, 30)
+    end,
+    { annotations = {
+        title           = "Apropos (fleet memory)",
+        readOnlyHint    = true,
+        destructiveHint = false,
+        idempotentHint  = true,
+        openWorldHint   = true,
+    } }
+)
+
+server:tool("wake_fleet",
+    "Wake a fleet NUC (pve1..pve4) via Fritz!Box Wake-on-LAN. Powers a node ON only; it cannot power anything off. Node boots in ~30-60s.",
+    { type = "object", properties = {
+        node = { type = "string", description = "Node to wake: '1'..'4' or 'pve1'..'pve4'" },
+    }, required = { "node" } },
+    function(a)
+        local node = tostring(a.node or ""):gsub("[^%w]", "")
+        if not node:match("^p?v?e?[1-4]$") then
+            return "Error: node must be 1-4 or pve1-pve4 (got: " .. tostring(a.node) .. ")"
+        end
+        return run_local("sudo /root/.local/bin/wake-pve " .. node, 15)
+    end,
+    { annotations = {
+        title           = "Wake fleet NUC",
+        readOnlyHint    = false,
+        destructiveHint = false,
+        idempotentHint  = true,
+        openWorldHint   = true,
+    } }
+)
+
 io.stderr:write(string.format("lmcp-hub starting on port %d with %d backends from %s\n",
     server.port, (function() local n = 0; for _ in pairs(backends) do n = n + 1 end; return n end)(), CONF_PATH))
 server:run()