feat(state): add pagination helpers

[galligan]

• Add paginate() for slicing arrays with cursor-based pagination
• Add loadCursor() and saveCursor() for cursor persistence
• Add PaginationStore interface and createPaginationStore() factory
• Add getDefaultPaginationStore() singleton accessor
• Add DEFAULT_PAGE_LIMIT constant (25)

Fixes #49, #50

Co-Authored-By: Claude Opus 4.5 noreply@anthropic.com

[galligan]

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• chore(outfitter): sync templates on pack #108
• chore(changesets): ignore app package #107
• fix(errors): avoid TaggedError extends warnings #106
• chore(release): align package versions to 0.1.0 #105
• docs: add README and CHANGELOG for testing, kit, outfitter #95
• feat(templates): add daemon project template #94
• feat(templates): add MCP server project template #93
• feat(templates): add CLI project template #92
• fix(cli): implement confirmDestructive prompts #104
• fix(cli): implement createCLI and command builder #103
• feat(kit): add @outfitter/kit meta-package #91
• docs(daemon): add README and CHANGELOG #90
• fix(daemon): fix locking module bugs (GREEN phase) #89
• test(daemon): add locking module tests (RED phase) #88
• feat(daemon): add errors, platform, and locking module stubs #87
• feat(outfitter): add doctor command for environment validation #86
• feat(outfitter): add init command with project scaffolding #85
• feat(daemon): add IPC communication and health checks #84
• feat(daemon): add types and lifecycle management #83
• feat(index): add FTS5 full-text search implementation #82
• feat(index): add types for FTS5 full-text search #81
• feat(testing): add MCP and CLI test harnesses #80
• feat(testing): add test fixture utilities #79
• feat(mcp): add MCP server implementation with typed handlers #78
• feat(mcp): add types and interfaces for MCP server #77
• feat(ui): add Shape discriminated union and render() #76
• feat(ui): add createTokens semantic color layer #75
• feat(state): add pagination helpers #74 👈 (View in Graphite)
• feat(logging): add DEFAULT_PATTERNS for common secret redaction #73
• feat(ui): add formatRelative() for human-readable timestamps #72
• feat(state): add encodeCursor/decodeCursor for pagination #71
• feat(types): add hashId() for deterministic short identifiers #70
• feat(contracts): add Logger.child() and fix AssertionError category #69
• feat(config): centralize environment variable access with Zod validation #42
• fix(logging): enable redaction by default when global rules exist #41
• docs(ui): add README, CHANGELOG, and TSDoc comments #39
• docs(state): add README, CHANGELOG, and TSDoc comments #38
• docs(file-ops): add README, CHANGELOG, and TSDoc comments #37
• docs(logging): add README, CHANGELOG, and TSDoc comments #36
• docs(config): add README, CHANGELOG, and TSDoc comments #35
• fix(cli): enforce cursor TTL #114
• fix(tests): remove placeholder tests #113
• chore(gitattributes): prefer ours for bun lockfiles #115
• main

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[greptile-apps]

Greptile Summary

• Adds pagination helper functions to @outfitter/state package with paginate<T>() for array slicing, cursor persistence functions, and a simplified PaginationStore interface
• Implements DEFAULT_PAGE_LIMIT constant (25) and singleton pattern for default pagination store to enable cursor persistence across operations
• Includes comprehensive test coverage following TDD Red phase methodology with 9 test cases covering pagination slicing, edge cases, and cursor persistence

Important Files Changed

Filename	Overview
packages/state/src/index.ts	Added complete pagination helpers API including paginate(), loadCursor(), saveCursor(), and PaginationStore interface
packages/state/src/tests/state.test.ts	Added comprehensive test suite with 9 test cases covering all pagination helper functions and edge cases

Confidence score: 5/5

• This PR is extremely safe to merge with minimal risk as it only adds new functionality without modifying existing APIs
• Score reflects comprehensive test coverage following TDD methodology, well-documented functions, and proper integration with existing cursor infrastructure
• No files require special attention as the implementation follows established patterns and includes thorough testing

Sequence Diagram

sequenceDiagram
    participant User
    participant API as "API/Controller"
    participant Store as "PaginationStore"
    participant Paginate as "paginate()"

    User->>API: "Request paginated data"
    API->>Store: "loadCursor(id)"
    Store-->>API: "Return cursor | null"
    
    alt cursor exists
        API->>Paginate: "paginate(items, cursor)"
        Paginate-->>API: "Return {page, nextCursor}"
    else no cursor
        API->>API: "createCursor({position: 0})"
        API->>Paginate: "paginate(items, newCursor)"
        Paginate-->>API: "Return {page, nextCursor}"
    end
    
    opt nextCursor exists
        API->>Store: "saveCursor(nextCursor)"
    end
    
    API-->>User: "Return page data + cursor token"

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[galligan]

Added pagination tests to ensure non-positive limits fall back to DEFAULT_PAGE_LIMIT and still advance the cursor.

[galligan]

Restacked after downstack update (formatRelative test stabilization); no additional changes in this PR.