* feat(s3): create bucket interactively during auth when unconfigured
Problem: when a user runs `:Pending s3 auth` with no bucket configured,
auth succeeds but offers no way to create the bucket. The user must
manually run `aws s3api create-bucket` and update their config.
Solution: add `util.input()` coroutine-aware prompt wrapper and a
`create_bucket()` flow in `s3.lua` that prompts for bucket name and
region, handles the `us-east-1` LocationConstraint quirk, and logs a
config snippet on success. Called automatically from `auth()` when
`sync.s3.bucket` is absent.
* ci: typing
* feat(parse): add `parse_duration_to_days` for duration string conversion
Problem: The archive command accepted only a bare integer for days,
inconsistent with the `+Nd`/`+Nw`/`+Nm` duration syntax used elsewhere.
Solution: Add `parse_duration_to_days()` supporting `Nd`, `Nw`, `Nm`,
and bare integers. Returns nil on invalid input for caller error handling.
* feat(archive): duration syntax and confirmation prompt
Problem: `:Pending archive` accepted only a bare integer for days and
silently deleted tasks with no confirmation, risking accidental data loss.
Solution: Accept duration strings (`7d`, `3w`, `2m`) via
`parse.parse_duration_to_days()`, show a `vim.ui.input` confirmation
prompt before removing tasks, and skip the prompt when zero tasks match.
* feat: add `<C-a>` / `<C-x>` keymaps for priority increment/decrement
Problem: Priority could only be cycled with `g!` (0→1→2→3→0), with no
way to directly increment or decrement.
Solution: Add `adjust_priority()` with clamping at 0 and `max_priority`,
exposed as `increment_priority()` / `decrement_priority()` on `<C-a>` /
`<C-x>`. Includes `<Plug>` mappings and vimdoc.
* fix(s3): use parenthetical defaults in bucket creation prompts
Problem: `util.input` with `default` pre-filled the input field, and
the success message said "Add to your config" ambiguously.
Solution: Show defaults in prompt text as `(default)` instead of
pre-filling, and clarify the message to "Add to your pending.nvim
config".
* ci: format
* feat(s3): create bucket interactively during auth when unconfigured
Problem: when a user runs `:Pending s3 auth` with no bucket configured,
auth succeeds but offers no way to create the bucket. The user must
manually run `aws s3api create-bucket` and update their config.
Solution: add `util.input()` coroutine-aware prompt wrapper and a
`create_bucket()` flow in `s3.lua` that prompts for bucket name and
region, handles the `us-east-1` LocationConstraint quirk, and logs a
config snippet on success. Called automatically from `auth()` when
`sync.s3.bucket` is absent.
* ci: typing
* refactor(types): extract inline anonymous types into named classes
Problem: several functions used inline `{...}` table types in their
`@param` and `@return` annotations, making them hard to read and
impossible to reference from other modules.
Solution: extract each into a named `---@class`: `pending.Metadata`,
`pending.TaskFields`, `pending.CompletionItem`, `pending.SystemResult`,
and `pending.OAuthClientOpts`.
* refactor(sync): extract shared utilities into `sync/util.lua`
Problem: sync epilogue code (`s:save()`, `_recompute_counts()`,
`buffer.render()`) and `fmt_counts` were duplicated across `gcal.lua`
and `gtasks.lua`. The concurrency guard lived in `oauth.lua`, coupling
non-OAuth backends to the OAuth module.
Solution: create `sync/util.lua` with `async`, `system`, `with_guard`,
`finish`, and `fmt_counts`. Delegate from `oauth.lua` and replace
duplicated code in both backends. Add per-backend `auth()` and
`auth_complete()` methods to `gcal.lua` and `gtasks.lua`.
* feat(sync): auto-discover backends, per-backend auth, S3 backend
Problem: sync backends were hardcoded in `SYNC_BACKENDS` list in
`init.lua`, auth routed directly through `oauth.google_client`, and
adding a non-OAuth backend required editing multiple files.
Solution: replace hardcoded list with `discover_backends()` that globs
`lua/pending/sync/*.lua` at runtime. Rewrite `M.auth()` to dispatch
to per-backend `auth()` methods with `vim.ui.select` fallback. Add
`lua/pending/sync/s3.lua` with push/pull/sync via AWS CLI, per-task
merge by `_s3_sync_id` (UUID), and `pending.S3Config` type.
