style(i18n): restore literal UTF-8 chars in lanes.json locale files

The lock-indicator commit's JSON edit re-serialized both files through
something that escaped every non-ASCII character (—, …, ·, ▶, ■) as
\uXXXX, touching ~180 unrelated lines for a two-key addition. No
functional change (JSON \u escapes are semantically identical) — just
restoring the literal-character convention every other locale file uses.

client/src/i18n/locales/en/lanes.json

@@ -11,7 +11,7 @@
   "add": "Add lane",
   "addLane": "Create a lane from a working directory",
   "addLaneBaseLabel": "Branch to fork from",
-  "addLaneNoBranches": "This repo has no commits yet \u2014 the worktree will start empty.",
+  "addLaneNoBranches": "This repo has no commits yet — the worktree will start empty.",
   "addLaneNotARepo": "Not a git repository (or no read access) yet.",
   "addLaneRepoHint": "An existing git repo. The dashboard creates a new worktree for the lane, not a folder you pick.",
   "addLaneRepoLabel": "Source repository",
@@ -40,9 +40,9 @@
   "destructive.count.unpushed": "Unpushed commits",
   "destructive.count.untracked": "Untracked files",
   "destructive.force": "I understand these unpushed commits will be discarded.",
-  "destructive.loading": "Loading current facts\u2026",
+  "destructive.loading": "Loading current facts…",
   "destructive.notice.activeSessionSkipped": "One or more sessions in this lane are still active and will be kept, not purged.",
-  "destructive.notice.adopted": "This lane points at a directory you own. Only the dashboard's record of it is dropped \u2014 the directory and its files are left untouched.",
+  "destructive.notice.adopted": "This lane points at a directory you own. Only the dashboard's record of it is dropped — the directory and its files are left untouched.",
   "destructive.notice.missing": "The lane directory is already gone. Removing it drops the dashboard's record and clears Git's stale worktree entry; nothing is deleted from disk.",
   "destructive.notice.unreadable": "The lane directory cannot be read as a Git worktree. Removal is attempted; if Git itself refuses, its worktree record is cleared directly instead. Either way, the directory itself is never touched.",
   "destructive.purge.confirm": "Purge history",
@@ -57,24 +57,24 @@
   "destructive.reset.title": "Reset managed worktree?",
   "destructive.warning.no-remote": "No Git remote is configured, so nothing here is backed up remotely. You can still proceed.",
   "emptyState": "No lanes yet. Create one from a working directory:",
-  "git.uncommitted": "{{dirty}} modified \u00b7 {{untracked}} untracked",
+  "git.uncommitted": "{{dirty}} modified · {{untracked}} untracked",
   "kind.adopted": "adopted",
   "kind.managed": "managed",
-  "laneHeader": "Lane {{id}} \u00b7 {{title}} \u00b7 {{pipeline}}",
+  "laneHeader": "Lane {{id}} · {{title}} · {{pipeline}}",
   "locks.held_one": "{{count}} lock held",
   "locks.held_other": "{{count}} locks held",
   "moreActions": "More actions",
   "preflightError": "Could not load the current lane facts.",
   "preflightErrorWithMessage": "Could not load the current lane facts: {{message}}",
-  "runtime.boot": "\u25b6 up",
-  "runtime.busy.down": "stopping\u2026",
-  "runtime.busy.up": "booting\u2026",
+  "runtime.boot": "▶ up",
+  "runtime.busy.down": "stopping…",
+  "runtime.busy.up": "booting…",
   "runtime.down": "down",
   "runtime.healthy": "healthy",
   "runtime.partial": "partial",
   "runtime.slot": "slot {{slot}}",
   "runtime.steppedAsideTitle": "Stepped aside from {{expected}}, which was already in use",
-  "runtime.stop": "\u25a0 down",
+  "runtime.stop": "■ down",
   "runtime.toggleTitle": "Boot or stop this lane's own application stack (separate from its Claude run)",
   "stageUndeclared": "not declared",
   "status.failed": "failed",