v3.29.0: the batch kinds (delete / reinstall) + the delete-package pre-step

The batch plan is a list of named steps ({name, apdu, delete}) now and
_ram_install_run generalized into _ram_plan_run; POST /api/ram-batch/start
dispatches on kind:
- install-cap (default; delete_package prepends a cascade DELETE on the
  package AID - a leftover package blocks INSTALL [for load]),
- reinstall-app (_ram_reinstall_plan: DELETE the applet instance + INSTALL
  [for install] from the loaded package - no .cap, no LOAD),
- delete (_ram_delete_plan: one GP DELETE, aid + target app/package ->
  P2=00/P2=80).

A delete step tolerates 'not found' (6A88/6A82 - the object is already
gone, the goal is met); any other delete failure stops the chain with the
delete's reason.  The policy serves all three kinds and the single
/api/ram-install-app, which now deletes the instance first (make
selectable stays one step); /api/ram-install takes delete_package too.

The status/summary carry the run's kind (the panel labels follow:
installed/deleted/reinstalled) and each attempt carries the last three
steps (steps + steps_total) for the panel's per-step detail.  The PWA's
three batch entries are grouped at the end of the operation selector (an
optgroup); ramIsBatchOp() is the one source for "per-card batch".

Docs: help EN/RU, api.md, the repo AGENTS.  Tests: the plan builders per
kind, the validations, the delete-package prepend, the not-found
tolerance, the kind dispatch/status/notice, the steps tail, the endpoint
steps, the PWA wiring.  925 frontend + 943 Python; sw cache simple-v447.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-simple-server"
-version = "3.28.8"
+version = "3.29.0"
 description = "HTTP REST server wrapping pysim for the SIMple PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.