Rename LastInteractionAt to LastInteractionTime

[khaong]

Summary

• Renames LastInteractionAt → LastInteractionTime and JSON tag last_interaction_at → last_interaction_time across all session state types and references
• Aligns main with the field naming used in the type-consolidation branch (ENT-221), so the consolidation PR doesn't need backward compat migration for this field
• No backward compat needed since last_interaction_at was only merged today and no state files exist with the old tag yet

Test plan

• mise run fmt — no formatting changes
• mise run lint — 0 issues
• mise run test:ci — all unit + integration tests pass

🤖 Generated with Claude Code

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Note

Low Risk
Primarily a field rename touching persistence tags and call sites; low logic risk but could break reading/writing existing session state files if any were created with the old JSON key.

Overview
Renames the session “last interaction” field from LastInteractionAt to LastInteractionTime across session state structs, JSON serialization (last_interaction_time), and all call sites.

Updates both auto-commit and manual-commit strategies to set/refresh LastInteractionTime on prompt submits (and when initializing new sessions), and adjusts status output and unit/integration tests to use the new field name.

^{Written by Cursor Bugbot for commit f382f6f. This will update automatically on new commits. Configure here.}

[Copilot]

Pull request overview

Renames the session state timestamp field LastInteractionAt to LastInteractionTime (and JSON tag last_interaction_at → last_interaction_time) across the CLI’s session/state persistence and strategy implementations, aligning main with the type-consolidation branch work.

Changes:

• Renamed the field and JSON tag across session state structs and strategy state structs.
• Updated strategy initialization/update paths to set LastInteractionTime.
• Updated unit/integration tests and status display logic to use the new field name.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
cmd/entire/cli/strategy/session_state_test.go	Updates serialization/deserialization test to use LastInteractionTime.
cmd/entire/cli/strategy/manual_commit_types.go	Renames strategy SessionState field + JSON tag.
cmd/entire/cli/strategy/manual_commit_session.go	Initializes new manual-commit sessions with LastInteractionTime.
cmd/entire/cli/strategy/manual_commit_hooks.go	Updates existing manual-commit sessions’ interaction time on prompt submit.
cmd/entire/cli/strategy/manual_commit.go	Updates conversion between session.State and strategy SessionState.
cmd/entire/cli/strategy/auto_commit.go	Updates auto-commit session initialization/update to use LastInteractionTime.
cmd/entire/cli/status_test.go	Updates status output tests to reference LastInteractionTime.
cmd/entire/cli/status.go	Uses LastInteractionTime for “active X ago” display.
cmd/entire/cli/session/state.go	Renames persisted session state field + JSON tag and updates comments.
cmd/entire/cli/integration_test/last_interaction_test.go	Updates integration tests to validate LastInteractionTime behavior.