fix(project-list): add pagination and flexible target parsing (#221)

## Summary

Fixes three bugs in `sentry project list`:

- **No pagination** — showed "displaying 30 out of 100 projects" with no
way to see the rest. Added `--cursor/-c` flag with a `last` magic value
that resumes from where you left off.
- **API pagination not followed** — setting `-n 200` still capped at 100
because the Sentry API paginates and we never followed cursor links.
Added `orgScopedPaginateAll()` so `listProjects()` transparently fetches
all pages.
- **`project list sentry/sentry`** said "No projects found in
organization 'sentry/sentry'" — now uses `parseOrgProjectArg()` (same as
`issue list`) to handle `org/project`, `org/`, and bare-word targets.

## Changes

### `src/lib/api-client.ts` — Pagination infrastructure
- `PaginatedResponse<T>` type, `parseLinkHeader()`,
`orgScopedRequestPaginated()`, `orgScopedPaginateAll()`
- `listProjects()` now auto-paginates transparently (all 6 callers
unchanged)
- New `listProjectsPaginated()` for explicit single-page fetches with
cursor control

### `src/commands/project/list.ts` — Rewritten command
- 4 target modes: `auto-detect`, `explicit` (org/project), `org-all`
(org/), `project-search` (bare slug)
- `--cursor/-c` flag with `last` magic value for easy page navigation
- JSON output returns `{ data, nextCursor?, hasMore }` in paginated mode

### `src/lib/db/schema.ts` — Schema v6
- Added `pagination_cursors` table for cursor caching

### `src/lib/db/pagination.ts` — New module
- Cursor cache with TTL (default 5 min) and context validation

### Tests
- Updated `test/e2e/project.test.ts` and `test/e2e/multiregion.test.ts`
for new `org/` syntax and paginated JSON format

Author: BYK

plugins/sentry-cli/skills/sentry-cli/SKILL.md

@@ -136,13 +136,14 @@ sentry org view my-org -w
 
 Work with Sentry projects
 
-#### `sentry project list <org>`
+#### `sentry project list <target>`
 
 List projects
 
 **Flags:**
 - `-n, --limit <value> - Maximum number of projects to list - (default: "30")`
 - `--json - Output JSON`
+- `-c, --cursor <value> - Pagination cursor (use "last" to continue from previous page)`
 - `-p, --platform <value> - Filter by platform (e.g., javascript, python)`
 
 **Examples:**
@@ -600,13 +601,14 @@ List organizations
 
 List projects
 
-#### `sentry projects <org>`
+#### `sentry projects <target>`
 
 List projects
 
 **Flags:**
 - `-n, --limit <value> - Maximum number of projects to list - (default: "30")`
 - `--json - Output JSON`
+- `-c, --cursor <value> - Pagination cursor (use "last" to continue from previous page)`
 - `-p, --platform <value> - Filter by platform (e.g., javascript, python)`
 
 ### Repos