Track X bot state files for session continuity

- Add x_queue/last_seen_id.json to track last processed mention ID
- Add x_queue/processed_mentions.json to prevent duplicate processing
- Update .gitignore to track critical state files while ignoring temp files
- Ensures bot maintains state across restarts and deployments

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[e-mail]>

.gitignore

···
 agent_archive/
 x_cache/
 x_queue/
+# But track important X state files
+!x_queue/last_seen_id.json
+!x_queue/processed_mentions.json
 

x_queue/last_seen_id.json

···
-{"last_seen_id": "1950714596828061885", "updated_at": "2025-07-30T17:31:12.539682"}
+{"last_seen_id": "1950780116126318997", "updated_at": "2025-07-30T21:47:07.345049"}

x_queue/processed_mentions.json

···
-["1950741288724423041", "1950690566909710618", "1950714596828061885", "1950739368530120865"]
+["1950754661222248941", "1950750041418989607", "1950779122890031203", "1950758670171795911", "1950777458657218590", "1950775893640802681", "1950755118434984411", "1950774869081354654", "1950778758614696173", "1950779106389614951", "1950754203871416763", "1950775531315888177", "1950776620203339781", "1950754744550728122", "1950751482476724241", "1950780116126318997", "1950763150195986893", "1950779585383313712", "1950750239994061165", "1950743359305478515", "1950764690168295530", "1950777178188288213", "1950763126796046406", "1950777589091688690", "1950746342672007544", "1950748541707829622", "1950769312056447186", "1950746269363871754", "1950769046783443440", "1950690566909710618", "1950745029666017362", "1950778983630704954", "1950777288091439352", "1950754871021592693", "1950766898423152648", "1950769061849358827", "1950714596828061885", "1950766224658534618", "1950757694312427564", "1950749194685407273", "1950750459045798159", "1950764759437189405", "1950768950729678964", "1950741288724423041", "1950750119219105907", "1950779760881373591", "1950749014728577308", "1950755355698647515", "1950756238528000184", "1950766482675421599", "1950764784477249958", "1950748407372353687", "1950749284804223244", "1950753699502100821", "1950776236239958521", "1950779868960186694", "1950768760899739896", "1950748959812813003", "1950762713313079588", "1950759115438887277", "1950776952513814997", "1950776906498109619", "1950776904006746230", "1950752256774856770", "1950774695558832499", "1950766890613350863", "1950742693988159754", "1950775129686090162", "1950776464145801332", "1950763200649318634", "1950775991808541048", "1950768798593904825", "1950739368530120865", "1950758096747610115", "1950766844111122851", "1950765586868326584", "1950766756869632018"]