fix: update playbooks to use subtree path for snapshot_download.py

scripts/agave-container/ is a git subtree of agave-stack's container-build
directory. Replaces fragile cross-repo symlink with proper subtree.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

playbooks/biscayne-recover.yml

@@ -36,7 +36,7 @@
     snapshot_dir: /srv/kind/solana/snapshots
     accounts_dir: /srv/kind/solana/ramdisk/accounts
     ramdisk_mount: /srv/kind/solana/ramdisk
-    snapshot_script_local: "{{ playbook_dir }}/../scripts/snapshot-download.py"
+    snapshot_script_local: "{{ playbook_dir }}/../scripts/agave-container/snapshot_download.py"
     snapshot_script: /tmp/snapshot-download.py
     snapshot_args: ""
     # Mainnet RPC for slot comparison

playbooks/biscayne-redeploy.yml

@@ -62,7 +62,7 @@
     accounts_dir: /srv/kind/solana/ramdisk/accounts
     ramdisk_mount: /srv/kind/solana/ramdisk
     ramdisk_size: 1024G
-    snapshot_script_local: "{{ playbook_dir }}/../scripts/snapshot-download.py"
+    snapshot_script_local: "{{ playbook_dir }}/../scripts/agave-container/snapshot_download.py"
     snapshot_script: /tmp/snapshot-download.py
     # Flags — non-destructive by default
     wipe_accounts: false