Release v0.2.6

• Merge branch 'chore/refactor' (bc23106)
• refactor: move clamping to handlers, fix nil-crash in handleToolCall, fix resources (29062a6)
• WIP: refactoring, save the state (5985f3e)
• refactor: remove ErrList, add collectOrFallback[T], use requireField consistently (994260a)
• refactor: migrate 22 exec.CommandContext call sites to execOutput/execCombinedOutput/execLines (efde08f)
• feat(tools): add execOutput, execCombinedOutput, execLines utilities (6f6d9c9)
• Merge pull request #1 from Mohabdo21/refactor/dry-high-priority (5088503)
• chore: enable all staticcheck checks and add package comments (c9a3be1)
• refactor: docker.go -- shortID helper, requireField validation, GatherDockerInfo dedup (H2+H3+H4) (5313665)
• refactor: replace 20 empty input structs with shared NoArgs type (H1) (880423e)
• refactor: consolidate sysfs readers into single readSysfsFile helper (H5) (b165a3e)
• refactor: deduplicate ErrList/OutputErrors method bodies via shared helpers (H6) (5fe454e)
• chore: added context7 library claim key (91ddc3d)
• Fix README: correct install commands, add pre-built binary option, fix config example, add missing tool and deps (9fa33d1)
• docs: add get_user_info to README tools table (c0ca65f)