docs(readme): repair stale badges, version, link and counts (#35)

## Summary

Pure documentation cleanup. README had several stale claims that
survived the 2026-02-08 rename, the 136b38b license migration, and the
steady growth of the codebase since v2.1.0.

| Field | Before | After | Why stale |
|---|---|---|---|
| OpenSSF badge URL | `panic-attacker` (404) | `panic-attack` | Repo
renamed 2026-02-08 (see `.claude/CLAUDE.md`) |
| License badge | `PMPL-1.0` → palimpsest-license | `MPL-2.0` →
mozilla.org | Finishes the migration started in 136b38b |
| Tests badge | 196 | 402 | Actual count: `grep -rcE '^\s*#\[test\]'`
across src+tests+benches |
| Status version | v2.1.0 | v2.5.0 | Authoritative source is
`Cargo.toml` |
| Status SLOC | 19,000+ | 32,000+ | `wc -l` reports 32,894 across `src/`
|
| Status tests | 196 | 400+ | Range-y so it doesn't rot per PR |
| Status subcommands | 22 | 25+ | Made range-y for the same reason
(actual `Commands::*` variants: 28) |
| ROADMAP link | `ROADMAP.md` (broken) | `ROADMAP.adoc` | File has
always been `.adoc` |

## Test plan

- [x] `git diff --stat` shows README.adoc-only change (cosmetic, no
code)
- [ ] CI on PR: dogfood-gate, governance, secret-scanner stay green
- [ ] Render check: the asciidoctor render on github.com still shows the
badges and Status block correctly

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

README.adoc

@@ -6,12 +6,12 @@
 :toc-placement: preamble
 :icons: font
 
-image:https://img.shields.io/badge/OpenSSF-Best_Practices-green?logo=opensourcesecurity[OpenSSF Best Practices,link="https://www.bestpractices.dev/en/projects/new?repo_url=https://github.com/hyperpolymath/panic-attacker"]
-image:https://img.shields.io/badge/License-PMPL--1.0-blue.svg[License: PMPL-1.0,link="https://github.com/hyperpolymath/palimpsest-license"]
+image:https://img.shields.io/badge/OpenSSF-Best_Practices-green?logo=opensourcesecurity[OpenSSF Best Practices,link="https://www.bestpractices.dev/en/projects/new?repo_url=https://github.com/hyperpolymath/panic-attack"]
+image:https://img.shields.io/badge/License-MPL--2.0-blue.svg[License: MPL-2.0,link="https://www.mozilla.org/en-US/MPL/2.0/"]
 image:https://api.thegreenwebfoundation.org/greencheckimage/github.com[Green Web,link="https://www.thegreenwebfoundation.org/green-web-check/?url=github.com"]
 image:https://img.shields.io/badge/status-active-green[Status]
 image:https://img.shields.io/badge/domain-security--analysis-blue[Domain]
-image:https://img.shields.io/badge/tests-196%20passing-brightgreen[Tests]
+image:https://img.shields.io/badge/tests-402%20passing-brightgreen[Tests]
 image:https://img.shields.io/badge/languages-49-blue[Languages]
 
 **panic-attack** is a multi-language security analysis and stress-testing system.
@@ -199,15 +199,15 @@ VeriSimDB remains the foundation dependency for these exports, so every snapshot
 
 == Status
 
-Current state: **v2.1.0**
+Current state: **v2.5.0**
 
-* 19,000+ lines of Rust + Chapel
-* 196 tests
+* 32,000+ lines of Rust + Chapel
+* 400+ tests
 * 0 warnings
-* 22 CLI subcommands
+* 25+ CLI subcommands
 * 49 supported languages
 
-See link:ROADMAP.md[ROADMAP.md] for full capability breakdown and milestones.
+See link:ROADMAP.adoc[ROADMAP.adoc] for full capability breakdown and milestones.
 
 ---