docs: streamline README — 1209 → 155 lines (#382)

* docs: streamline README from 1209 to 155 lines

Now that gosqlx.dev has full docs, playground, benchmarks, and blog,
the README serves as a concise landing page that drives to the website.

Kept: badges, overview, key features, quick start, install (4 methods),
MCP server, documentation link table, performance stats, contributing.

Removed: inline code examples, advanced SQL features, project structure,
testing section, development setup, roadmap, community sections, use cases,
project metrics — all now live at gosqlx.dev.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add back community, contributing detail, and footer to README

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: redesign README — visual, exciting, contribution-friendly

Fresh design with:
- "Parse SQL at the speed of Go" tagline
- Stats bar (ops/sec, latency, SQL-99, dialects, race conditions)
- "Why GoSQLX?" section — not an ORM, not slow, not limited
- Side-by-side install table (Go/CLI | VS Code/MCP)
- 6-cell feature grid (Parser, Analysis, Tooling, Multi-Dialect, AI-Ready, Battle-Tested)
- Docs table with icons
- Contributing section with TDD emphasis and 24hr review promise
- Community CTA badges (Discussions, Issues, Blog)
- Footer with star CTA

1209 → 215 lines (82% reduction, better design)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* style: replace emdashes with hyphens across 122 files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Ajit Pratap Singh <ajitpratapsingh@Ajits-Mac-mini-2655.local>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

.claude/settings.json

@@ -0,0 +1,6 @@
+{
+  "enabledPlugins": {
+    "qodo-skills@claude-plugins-official": true,
+    "pagerduty@claude-plugins-official": true
+  }
+}

.github/DISCUSSION_TEMPLATE/ideas.md

@@ -30,4 +30,4 @@ labels: ["enhancement"]
 
 - [ ] I can open an issue and submit a PR after community discussion
 - [ ] I'd love help from maintainers / other contributors
-- [ ] I'm just sharing an idea — no commitment
+- [ ] I'm just sharing an idea - no commitment

.github/DISCUSSION_TEMPLATE/show-and-tell.md

@@ -2,7 +2,7 @@
 labels: ["showcase"]
 ---
 
-<!-- Share how you're using GoSQLX! Projects, integrations, benchmarks, blog posts — all welcome. -->
+<!-- Share how you're using GoSQLX! Projects, integrations, benchmarks, blog posts - all welcome. -->
 
 ## What did you build?
 
@@ -18,7 +18,7 @@ labels: ["showcase"]
 
 ## Benchmark / impact (optional)
 
-<!-- Query volume, performance gains, team size — anything that shows real-world impact. -->
+<!-- Query volume, performance gains, team size - anything that shows real-world impact. -->
 
 ---
 

.github/ISSUE_TEMPLATE/documentation.md

@@ -10,7 +10,7 @@ assignees: ''
 
 <!-- Which file, section, or topic is affected? Link to the specific page if possible. -->
 
-**File / section**: <!-- e.g. docs/CLI_GUIDE.md — gosqlx analyze section -->
+**File / section**: <!-- e.g. docs/CLI_GUIDE.md - gosqlx analyze section -->
 
 ## What is wrong or missing?