Add i18n system with localization support:

- New `internal/i18n/localizer.go` with TOML-based locale management
  (en, tok)
- New `internal/config/config.go` with locale preference storage
- Refactored all commands to use i18n strings instead of hardcoded text
- Updated CLI environment and plan generation for i18n
- Added comprehensive tests for config and localization

Co-authored-by: Crush <crush@charm.land>

Tell the agents how to interact with `np` when they're in this repo.
I've noticed they try to test dev changes with the installed version and
update their normal lists with the dev version. Hopefully this helps
resolve that.

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Refined guidance messages across session workflow commands:

- np s: expanded with detailed goal-setting instructions including title
length limits, description requirements, reference formatting, and
task management examples with multi-line syntax
- np g s: condensed to single actionable message focusing on study then
task planning
- np g u: simplified to one line about task alignment
- np r: added task creation examples with multi-line description syntax

Changes make prompts more prescriptive where needed (session start) and
more concise where appropriate (goal commands).

Co-authored-by: Crush <crush@charm.land>

Remove redundant else branches and duplicate instructions when all tasks
are complete. The completion message now only advises escalating to
operator without repeating usage patterns already shown elsewhere.

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Implements: 87aeb06
Co-authored-by: Crush <crush@charm.land>

- Show full plan only when multiple tasks added; print 'Added'
  for single task
- Recommend batch mode first in goal set help text
- Add guidance to check task list after sequential adds

Co-authored-by: Crush <crush@charm.land>
Implements: bug-8461b50

Updated README.md and AGENTS.md to document the new batch task
capabilities:
- Task addition: np t a -t 'one' -d 'desc' -t 'two' -d 'desc'
- Status updates: np t u -i id1 -s status1 -i id2 -s status2

Clarified both single and batch patterns in workflow descriptions.

Co-authored-by: Crush <crush@charm.land>

Modified cmd/t/u.go to accept StringArray for -i (id) and -s (status)
flags,
enabling batch status updates like:
np t u -i abc123 -s completed -i def456 -s in_progress

This reduces context window usage by printing the plan once instead of
multiple times when updating several tasks.

Updated all help text across cmd/{s,r,g/s,g/u,t/a,t/u}.go to show:
- Multi-task addition examples with multi-line descriptions
- Batch status update patterns (especially completed + in_progress)
- Both single and batch operation examples side-by-side

The implementation validates ID/status count matching, processes updates
in a single transaction, and provides appropriate feedback messages for
both single-task and batch operations.

Co-authored-by: Crush <crush@charm.land>
References: bug-b529dcf

RenderPlan already returns string with trailing newline.
Changed Fprintln to Fprint in PrintPlan and runListTasks.

Implements: bug-ae16af8
Co-authored-by: Crush <crush@charm.land>

The database directory ~/.config/nasin-pali now contains the badger
database at ~/.config/nasin-pali/data/ instead of being the database
itself. This provides cleaner separation and allows for potential
future configuration files in the parent directory.

Implements: bug-4b90e13
Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-Authored-By: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Task commands form a cohesive feature set for managing session tasks.

- t: list tasks with optional status filter
- t a: add multiple tasks (validates title/description pairs)
- t u: update task status, title, or description (requires reason for
  content changes and cancel/fail)
- All commands print plan and provide contextual next steps

Co-authored-by: Crush <crush@charm.land>

Goal commands form a cohesive feature set for managing session goals.

- g: show goal with full plan
- g s: set goal (requires title and description)
- g u: update goal (requires reason and at least one change)
- All commands print plan and provide contextual next steps

Co-authored-by: Crush <crush@charm.land>

Start command is the entry point for creating directory-scoped sessions.

- Replace stub with full implementation
- Handle AlreadyActiveError with helpful message
- Print next steps after session creation

Co-authored-by: Crush <crush@charm.land>

Root command bootstraps environment for all subcommands.

- Add PersistentPreRunE to open environment
- Add PersistentPostRunE to close environment
- Register all top-level commands
- Set SilenceUsage to avoid double error output

Co-authored-by: Crush <crush@charm.land>

All CLI commands need shared foundation for environment management, plan
rendering, and common helpers.

- Add Environment with DB and store wrappers
- Add plan rendering with status icons
- Add shared command helpers (Environment, ActiveSession, PrintPlan,
  CommandString)
- Add db_test.go for database tests

Co-authored-by: Crush <crush@charm.land>

Session store now exposes transactional helpers for CLI commands to
coordinate updates across goal/task/event stores atomically.

- Add WithTxn() to create TxnStore
- Add TxnStore with Load() and TouchAt() methods
- Refactor internal loadDocument() helper for reuse
- Add TestTxnStoreTouchAt

Co-authored-by: Crush <crush@charm.land>

Co-authored-by: Crush <crush@charm.land>

Implements Store with Start, Get, Archive, and ActiveByPath operations.
Sessions use ULID-based identifiers and track state transitions between
active and archived.

Co-authored-by: Crush <crush@charm.land>

Introduces event, goal, and task storage subsystems built on Badger:

- event: append-only log with typed payloads for state changes
- goal: CRUD operations for session goals with event tracking
- task: full lifecycle management with status indexing
- testutil: helpers for deterministic test clocks and databases
- timeutil: clock abstraction for testability

All packages include comprehensive test coverage.

Co-authored-by: Crush <crush@charm.land>

Fix View transaction to return nil on success instead of ctx.Err(),
which
caused spurious failures when a context deadline was set but the
operation
completed successfully before expiration.

Improve configuration defaults for CLI durability:
- Default SyncWrites to true to ensure planning state persists across
  crashes
- Use os.UserConfigDir() instead of custom platform logic for better
cross-platform config directory handling

Code cleanup:
- Remove redundant txn.Discard() after successful commit
- Rename suffixTasks to suffixTask for singular/plural consistency
- Fix KeyString doc to correctly state it allocates
- Remove unused ctx assignment in View

Signed-off-by: Crush <crush@charm.land>

Refine the Badger helpers.

Signed-off-by: Crush <crush@charm.land>