Release v0.23.6

What's Changed

• fix: clarify opus 4.7 reasoning tiers by @kl2806 in #1816
• Shelley/let 8514 hybrid file index directory listing by @shelleypham in #1817
• fix: move 'opus' to 4.7 by @AriWebb in #1818
• fix: add --no-bin-links on Windows for channel runtime installs by @4shub in #1821
• Revert "fix: add --no-bin-links on Windows for channel runtime installs" by @4shub in #1822
• fix: add --no-bin-links on Windows for channel runtime installs by @4shub in #1824
• ci: stabilize headless API smoke coverage by @cpacker in #1827
• fix(cron): remove 3-day auto-expiry for recurring tasks by @cpfiffer in #1828
• feat(channels): add letta channels bind CLI command by @cpfiffer in #1802
• feat(ws): stream bash over stream_delta by @christinatong01 in #1799
• fix(slack): bootstrap mention-created thread context by @cpacker in #1811
• feat(channels): add Slack default permission mode by @cpacker in #1812
• chore: bump version to 0.23.6 by @github-actions[bot] in #1815

Full Changelog: v0.23.5...v0.23.6