fix(aem-eds): clean up tile to clear all lint warnings

[shsteimer]

Summary

Five fixes that take the EDS plugin tile to a clean lint state (only the unrelated `code-review` token-bloat warning remains, deferred to a follow-up):

1. Register `da-auth` and `ue-component-model` in `tile.json`. Both existed on disk but were missing from the skills map, so tessl never saw them.
2. Add release-stub `package.json` for `ue-component-model`. Every other EDS skill has one (semantic-release-monorepo requirement); this skill was missing it.
3. Add `.tileignore` to suppress release-artifact lint noise. `CHANGELOG.md` and skill-root `package.json` files are not skill content. Negation pattern (`!/scripts//package.json`) preserves any future skills shipping node script tools under `scripts/`.
4. Rename `resources/` → `references/` across 8 skills to match the agentskills.io spec. Every other plugin in this repo and EDS's own `ue-component-model` already use `references/`.
5. Convert backtick-quoted resource paths to markdown links in SKILL.md so tessl lint sees them as reachable from manifest entrypoints. Eliminates all 17 orphan warnings. Also fixes two pre-existing broken cross-skill references that pointed at `../page-import/resources/...` (no such dir; actual file lives in `content-driven-development/references/`). Adds a missing link in `code-review/SKILL.md` to `references/review-checklist.md`.

Per Anthropic's agent skills spec, markdown links don't trigger eager loading — Claude reads SKILL.md, sees the link, decides on demand whether to follow it. Confirmed in lint output: on-demand token range now shows lazy bounds (e.g., building-blocks `2.3k-6.7k`) rather than a single value, with the lower bound unchanged from before.

Verification

Before:
```
⚠ Found 36 orphaned file(s) not linked from manifest entrypoints
⚠ Found 20 skill file(s) outside spec directories
⚠ Skill 'code-review': SKILL.md is approximately 10277 tokens
```

After:
```
⚠ Skill 'code-review': SKILL.md is approximately 10315 tokens
✔ Tile adobe/aem-edge-delivery-services@0.1.0 is valid
```

`tessl skill publish plugins/aem/edge-delivery-services --dry-run` confirms a valid tile with all 20 skills declared.

Follow-ups (separate PRs)

• `tessl skill lint` in CI — fail on errors, surface warnings as informational.
• The release workflow's auto-publish path (`release.config.cjs:28`) only fires when a per-skill `tile.json` exists in the released directory. Plugin-level multi-skill tiles like this one never auto-publish on merge.
• `code-review` SKILL.md is ~10.3k tokens (recommended max 5k). Trim by hoisting detail into `references/` files.

🤖 Generated with Claude Code