Fix /resume getting stuck when resumed chat had stale compaction flags

When /resume copies the old chat state, it now clears :auto-compacting?
and :compacting? flags alongside :prompt-finished?. Stale compaction
flags caused finish-chat-prompt! to silently skip, leaving the UI stuck
at "Parsing given context".

🤖 Generated with [eca](https://eca.dev)

Co-Authored-By: eca <git@eca.dev>

Author: ericdallo

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Fix `/resume` getting stuck when resumed chat had stale compaction flags.
+
 ## 0.122.0
 
 - Improve summary of filesystem and shell functions making cleaner.

src/eca/features/commands.clj

@@ -406,7 +406,7 @@
                    :else
                    (let [chat (get chats selected-chat-id)]
                      (swap! db* assoc-in [:chats chat-id] chat)
-                     (swap! db* update-in [:chats chat-id] dissoc :prompt-finished?)
+                     (swap! db* update-in [:chats chat-id] dissoc :prompt-finished? :auto-compacting? :compacting?)
                      (swap! db* update-in [:chats] #(dissoc % selected-chat-id))
                      (db/update-workspaces-cache! @db* metrics)
                      {:type :chat-messages