docs(03-02): complete callback query handling plan
Tasks completed: 3/3 - Task 1: Configure Telegram Trigger for callback queries - Task 2: Implement suggestion flow for no-match cases - Task 3: Handle suggestion callback and execute action SUMMARY: .planning/phases/03-container-actions/03-02-SUMMARY.md
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Lucas Berger
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## Current Position
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- **Milestone:** v1.0 — Conversational Docker Control
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- **Phase:** 3 of 5 — Container Actions (IN PROGRESS)
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- **Plan:** 1 of 2 complete
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- **Status:** Plan 03-01 complete, ready for Plan 03-02
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- **Last activity:** 2026-01-30 - Completed 03-01-PLAN.md
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- **Phase:** 3 of 5 — Container Actions (COMPLETE)
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- **Plan:** 2 of 2 complete
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- **Status:** Phase 3 complete, ready for Phase 4
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- **Last activity:** 2026-01-30 - Completed 03-02-PLAN.md
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## Progress
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```
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Phase 1: Foundation [██████████] Complete (2/2 plans)
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Phase 2: Docker Integration [██████████] Complete (2/2 plans)
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Phase 3: Container Actions [█████░░░░░] In Progress (1/2 plans)
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Phase 3: Container Actions [██████████] Complete (2/2 plans)
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Phase 4: Logs & Intelligence[░░░░░░░░░░] Not started
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Phase 5: Polish & Deploy [░░░░░░░░░░] Not started
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Overall: [█████░░░░░] 50%
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Overall: [██████░░░░] 60%
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```
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## Recent Decisions
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@@ -41,6 +41,9 @@ Overall: [█████░░░░░] 50%
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| Substring matching for containers | Simple approach works well, no external library needed | 2026-01-29 |
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| HTTP 304 as success | Already-in-state is success from user perspective | 2026-01-30 |
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| 10-second graceful timeout | Allows containers to shutdown cleanly before SIGKILL | 2026-01-30 |
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| HTTP Request for inline keyboards | Native Telegram node has expression bug with dynamic keyboards | 2026-01-30 |
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| Single-char action codes in callback | s/t/r/x encoding fits in 64-byte callback_data limit | 2026-01-30 |
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| Stateless 2-min timeout | Timestamp in callback_data avoids server-side state | 2026-01-30 |
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## Pending Todos
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@@ -53,9 +56,9 @@ Overall: [█████░░░░░] 50%
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## Session Continuity
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- **Last session:** 2026-01-30
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- **Stopped at:** Completed 03-01-PLAN.md (Basic Container Actions)
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- **Stopped at:** Completed Phase 3 (Container Actions)
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- **Resume file:** None
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- **Next step:** Execute 03-02-PLAN.md (Confirmation flow for multiple matches)
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- **Next step:** Plan Phase 4 - Logs & Intelligence
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---
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*Auto-maintained by GSD workflow*
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@@ -0,0 +1,111 @@
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---
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phase: 03-container-actions
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plan: 02
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subsystem: telegram-callbacks
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tags: [callback-query, inline-keyboard, telegram-api, n8n, http-request]
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# Dependency graph
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requires:
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- phase: 03-01
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provides: Basic container actions with match routing
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provides:
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- Callback query handling for inline buttons
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- Did-you-mean suggestion flow for typos
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- 2-minute confirmation timeout
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- Message cleanup after button clicks
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affects: [03-update-flow, 04-logs]
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# Tech tracking
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tech-stack:
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added: []
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patterns:
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- "HTTP Request node for Telegram inline keyboards (workaround for native node bug)"
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- "Callback data JSON encoding with short keys for 64-byte limit"
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- "Stateless confirmation via timestamp in callback_data"
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- "answerCallbackQuery + deleteMessage for UI cleanup"
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key-files:
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created: []
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modified:
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- n8n-workflow.json
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key-decisions:
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- "Use HTTP Request for sendMessage with inline_keyboard (native Telegram node doesn't support dynamic keyboards)"
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- "Encode action as single char (s/t/r/x) to fit in 64-byte callback_data limit"
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- "2-minute timeout enforced client-side via timestamp comparison"
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- "Delete suggestion message after any button click for clean UI"
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patterns-established:
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- "Callback query routing: Route Update Type -> IF Callback Authenticated -> Parse Callback Data -> Route Callback"
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- "Score-based fuzzy matching for suggestions (score >= 2 required)"
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- "Three-branch callback handling: cancel, expired, execute"
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# Metrics
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duration: 15min
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completed: 2026-01-30
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---
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# Phase 03 Plan 02: Callback Query Handling Summary
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**Inline button infrastructure with did-you-mean suggestions using HTTP Request for Telegram API and stateless callback_data encoding**
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## Performance
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- **Duration:** 15 min
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- **Started:** 2026-01-30T13:27:00Z
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- **Completed:** 2026-01-30T13:42:00Z
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- **Tasks:** 3
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- **Files modified:** 1
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## Accomplishments
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- Telegram Trigger now receives both message and callback_query updates
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- Route Update Type switch separates message vs callback flows
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- IF Callback Authenticated validates user before processing callbacks
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- Find Closest Match scores containers and suggests best match for typos
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- Build Suggestion Keyboard creates inline_keyboard JSON with short callback_data
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- Send Suggestion uses HTTP Request to Telegram API (workaround for native node limitation)
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- Full callback flow: Parse -> Route -> Handle (Cancel/Expired/Execute)
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- Cancel: answer query "Cancelled", delete suggestion message
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- Expired: answer query with alert, delete message
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- Execute: run Docker action, answer query, delete message, send result
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Configure Telegram Trigger for callback queries** - `2cbf6e7` (feat)
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2. **Task 2: Implement suggestion flow for no-match cases** - `56eea26` (feat)
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3. **Task 3: Handle suggestion callback and execute action** - `768d758` (feat)
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## Files Created/Modified
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- `n8n-workflow.json` - Extended from 27 to 41 nodes with callback infrastructure:
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- Route Update Type, IF Callback Authenticated (Task 1)
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- Find Closest Match, Check Suggestion, Build Suggestion Keyboard, Send Suggestion (Task 2)
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- Parse Callback Data, Route Callback, Handle Cancel/Expired, Build/Execute/Parse Callback Action, Answer/Delete/Send result (Task 3)
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## Decisions Made
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- Use HTTP Request node for sendMessage with inline_keyboard - native Telegram node has expression bug with dynamic keyboards
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- Encode action as single character (s=start, t=stop, r=restart, x=cancel) to fit callback_data 64-byte limit
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- Require minimum score of 2 for suggestions - prevents suggesting unrelated containers
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- 2-minute timeout enforced via timestamp in callback_data (stateless approach)
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- Delete suggestion message after any button click for clean chat UI
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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None
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- Single-container suggestion flow complete
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- Multiple-match batch confirmation still uses placeholder text (could be enhanced in future)
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- Ready for Phase 04: Logs & Intelligence
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- Container update flow (pull + recreate) deferred to later plan
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---
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*Phase: 03-container-actions*
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*Completed: 2026-01-30*
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