revert: drop AP_RPUTS single-arg patch and fn_HGet renames

Both workarounds existed because Five was missing two features that
just landed upstream:

  Five 7629f95 (variadic PValue) makes FUNCTION foo(...) / PValue()
  actually return the caller's variadic args instead of the caller's
  first LOCAL slot. AP_RPUTS / AP_ECHO can go back to their `( ... )`
  signature now.

  Five f3e0ffe (file-local STATIC FUNCTION) gives each .prg its own
  namespace for `STATIC FUNCTION name`, so the seven duplicate
  `STATIC FUNCTION fn_HGet` definitions across labdb's api/*.prg
  files no longer collide. The sed-renamed unique names can revert
  to the upstream definitions.

Files

  app/bridge/bridge_request.prg     ← cp from fivenode/native/
  app/api/{device-status,record-detail,records-list,session-detail,
           session-stats,sessions-list,session-export}.prg
                                    ← cp from fivenode/labdb/api/

fivenode-upstream is now byte-identical to fivenode_go's app/ copy
of those files. No more "// fivenode_go patch" comments, no more
file-prefix renames.

Verified end-to-end against the same live postgres@16 cluster:
  /api/admin-stats.prg    -> {"active_sessions":1,"devices":2,...}
  /api/sessions-list.prg  -> 2 rows w/ full session data
  /api/admin-devices.prg  -> 2 devices w/ api_key, created_at
  /api/hello.prg          -> hello (unchanged)
  /                       -> 200 text/html (static)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/api/device-status.prg

@@ -63,7 +63,7 @@ FUNCTION Main()
    AP_JSONRESPONSE(hOut)
 RETURN NIL
 
-FUNCTION device_status_fn_hget(h, k, xDefault)
+STATIC FUNCTION fn_HGet(h, k, xDefault)
    IF xDefault == NIL ; xDefault := "" ; ENDIF
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) .AND. h[k] != NIL
       RETURN h[k]

app/api/record-detail.prg

@@ -20,6 +20,6 @@ FUNCTION Main()
    })
 RETURN NIL
 
-FUNCTION record_detail_fn_hget(h, k)
+STATIC FUNCTION fn_HGet(h, k)
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) ; RETURN h[k] ; ENDIF
 RETURN ""

app/api/records-list.prg

@@ -47,6 +47,6 @@ FUNCTION Main()
    })
 RETURN NIL
 
-FUNCTION records_list_fn_hget(h, k)
+STATIC FUNCTION fn_HGet(h, k)
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) ; RETURN h[k] ; ENDIF
 RETURN ""

app/api/session-detail.prg

@@ -26,6 +26,6 @@ FUNCTION Main()
    })
 RETURN NIL
 
-FUNCTION session_detail_fn_hget(h, k)
+STATIC FUNCTION fn_HGet(h, k)
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) ; RETURN h[k] ; ENDIF
 RETURN ""

app/api/session-export.prg

@@ -74,7 +74,7 @@ FUNCTION Main()
    AP_RPUTS(cBOM + fn_Join(aLines, cCRLF))
 RETURN NIL
 
-FUNCTION session_export_fn_hget(h, k)
+STATIC FUNCTION fn_HGet(h, k)
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) ; RETURN h[k] ; ENDIF
 RETURN ""
 

app/api/session-stats.prg

@@ -129,6 +129,6 @@ FUNCTION Main()
 
 RETURN NIL
 
-FUNCTION session_stats_fn_hget(h, k)
+STATIC FUNCTION fn_HGet(h, k)
    IF HB_ISHASH(h) .AND. hb_HHasKey(h, k) ; RETURN h[k] ; ENDIF
 RETURN NIL

app/api/sessions-list.prg

@@ -41,7 +41,7 @@ FUNCTION Main()
 RETURN NIL
 
 // Safe hash get (returns "" for missing key)
-FUNCTION sessions_list_fn_hget(hHash, cKey)
+STATIC FUNCTION fn_HGet(hHash, cKey)
    IF HB_ISHASH(hHash) .AND. hb_HHasKey(hHash, cKey)
       RETURN hHash[ cKey ]
    ENDIF

app/bridge/bridge_request.prg

@@ -108,26 +108,37 @@ RETURN AP_HEADERSOUTSET( "Content-Type", cType )
 
 // ── Output ──
 
-// fivenode_go patch: collapsed (...) -> single arg. Five's PValue returns
+FUNCTION AP_RPUTS( ... )
-// the caller's LOCALs rather than the actual variadic args (declared
+
-// params are 0 for `(...)`, so the runtime never copies args into the
+   LOCAL n, u
-// locals slot PValue reads). Every call site in this codebase passes
+
-// exactly one value, so the collapse is behaviour-preserving.
+   FOR n := 1 TO PCount()
-// TODO: revert once Five gains true variadic PValue support.
+      u := PValue( n )
-FUNCTION AP_RPUTS( u )
       IF ValType( u ) == "C"
          bridge_output_append( u )
       ELSE
          bridge_output_append( fn_ValToChar( u ) )
       ENDIF
+   NEXT
+
 RETURN NIL
 
-FUNCTION AP_ECHO( u )
+FUNCTION AP_ECHO( ... )
+
+   LOCAL n, u
+
+   FOR n := 1 TO PCount()
+      u := PValue( n )
       IF ValType( u ) == "C"
          bridge_output_append( u )
       ELSEIF ValType( u ) != "U"
          bridge_output_append( fn_ValToChar( u ) )
       ENDIF
+      IF n < PCount()
+         bridge_output_append( " " )
+      ENDIF
+   NEXT
+
 RETURN NIL
 
 // ── Parameter Parsing ──