docs: record Android sync recovery

docs/plans/workflow-system.md

@@ -74,7 +74,9 @@ not make it the global next step while another pilot can still progress.
   transferred intact into `sync/recordings`, establishing its actual format and
   path. The user selected Fossify's native `recordings/inbox` destination, and
   the new event-driven Orion CPU pipeline passes an isolated transcription of
-  that recording without modifying or exposing its contents.
+  that recording without modifying or exposing its contents. A pathological
+  synchronized `.devenv` tree was removed from the Pixel and is now ignored by
+  the Nix-owned Syncthing folder on Linux peers.
 - Next: activate and validate the Orion transcription owner, then retire the
   retained Zenith timer. Activate the batched Zenith desktop changes once that
   migration is ready, while independent external pilots continue as inputs
@@ -115,6 +117,7 @@ not make it the global next step while another pilot can still progress.
 | NixOS configuration | `chore/workflow-system` | `422a1ea` | Scope GitHub and Context7 credentials to their callers |
 | NixOS configuration | `chore/workflow-system` | `ec54ddd` | Own Outlook's stable launcher and select Pinta over GIMP |
 | NixOS configuration | `chore/workflow-system` | `656f144` | Prepare event-driven CPU transcription on Orion |
+| NixOS configuration | `chore/workflow-system` | `fa17d77` | Exclude generated devenv state from Syncthing |
 | `yookr-dashboard-new` | `feat/gogv2` | `934605d` | Remove obsolete dashboard converter |
 | `yookr-dashboard-new` | `feat/gogv2` | `8e6e4bc` | Establish its project contract and native lifecycle |
 | `yookr-dashboard-new` | `feat/gogv2` | `c99f8b6` | Move runtime configuration to its machine-local owner |
@@ -214,6 +217,16 @@ Polaris:
 - The verified-empty legacy directories `~/work/.data/mongodb`, `~/work/.data`,
   and `~/work/repos` are removed. The stale `~/.config/codex` tree was moved to
   desktop Trash after explicit approval; the active `~/.codex` tree is intact.
+- `Sync/uni/algorithms` remained on the Pixel after its Zenith and Orion copies
+  were deleted. Android Files and MTP crashed, while recursive ADB operations
+  appeared to hang because `.devenv/state/venv` contained at least one thousand
+  generated files and deeply nested package data behind Android's FUSE layer;
+  no malformed top-level entry or filesystem failure was found. With the
+  Syncthing-Fork folder paused and explicit approval, ADB atomically renamed and
+  then permanently deleted only that exact tree. The live and temporary paths
+  are absent. The shared Syncthing configuration now ignores `**/.devenv` so
+  generated devenv state cannot recur from a Linux peer; flake evaluation and
+  no-link Zenith and Orion builds pass.
 - `rules-service` now has a non-mutating direnv shell, minimal Nix toolchain and
   formatting check, native Cargo recipes, factual repository instructions,
   one `.http` request collection, explicit test/live deployment paths, and a