Re-vendor the shared files from sneak/prompts at 0653579 (closes #52)

Takes .golangci.yml, .dockerignore, .gitignore, .editorconfig, the
workflow and REPO_POLICIES.md from sneak/prompts 0653579, with this
repository's own entries after the shared content. Lint (golangci-lint
v2.14.0) and test are Dockerfile phases that script/lint and script/test
build alone with a new CACHEBUST value, keeping Go's and golangci-lint's
caches; the image build depends on both. make fmt and make fmt-check also
format the markdown with prettier, pinned in yarn.lock. The agent
guidance moves to AGENTS.md. The Go code is fixed for what the new
configuration finds, and the AS and prefix detail reads now return the
rows' error after their loops.

Model: opus-5-5

internal/database/models.go

@@ -1,4 +1,3 @@
-// Package database provides SQLite storage for BGP routing data.
 package database
 
 import (
@@ -9,6 +8,8 @@ import (
 
 // ASN represents an Autonomous System Number with its metadata including
 // handle, description, WHOIS data, and first/last seen timestamps.
+//
+//nolint:tagliatelle // field names are the existing JSON API
 type ASN struct {
 	ASN         int    `json:"asn"`
 	Handle      string `json:"handle"`
@@ -36,37 +37,39 @@ type ASN struct {
 // Prefix represents an IP prefix (CIDR block) with its IP version (4 or 6)
 // and first/last seen timestamps.
 type Prefix struct {
-	ID        uuid.UUID `json:"id"`
-	Prefix    string    `json:"prefix"`
-	IPVersion int       `json:"ip_version"` // 4 or 6
-	FirstSeen time.Time `json:"first_seen"`
-	LastSeen  time.Time `json:"last_seen"`
+	ID        uuid.UUID
+	Prefix    string
+	IPVersion int // 4 or 6
+	FirstSeen time.Time
+	LastSeen  time.Time
 }
 
 // Announcement represents a BGP announcement or withdrawal event,
 // containing the prefix, AS path, origin ASN, peer ASN, next hop, and timestamp.
 type Announcement struct {
-	ID           uuid.UUID `json:"id"`
-	PrefixID     uuid.UUID `json:"prefix_id"`
-	PeerASN      int       `json:"peer_asn"`
-	OriginASN    int       `json:"origin_asn"`
-	Path         string    `json:"path"` // JSON-encoded AS path
-	NextHop      string    `json:"next_hop"`
-	Timestamp    time.Time `json:"timestamp"`
-	IsWithdrawal bool      `json:"is_withdrawal"`
+	ID           uuid.UUID
+	PrefixID     uuid.UUID
+	PeerASN      int
+	OriginASN    int
+	Path         string // JSON-encoded AS path
+	NextHop      string
+	Timestamp    time.Time
+	IsWithdrawal bool
 }
 
 // ASNPeering represents a peering relationship between two ASNs,
 // stored with the lower ASN as ASA and the higher as ASB.
 type ASNPeering struct {
-	ID        uuid.UUID `json:"id"`
-	ASA       int       `json:"as_a"`
-	ASB       int       `json:"as_b"`
-	FirstSeen time.Time `json:"first_seen"`
-	LastSeen  time.Time `json:"last_seen"`
+	ID        uuid.UUID
+	ASA       int
+	ASB       int
+	FirstSeen time.Time
+	LastSeen  time.Time
 }
 
 // LiveRoute represents a route in the live routing table
+//
+//nolint:tagliatelle // field names are the existing JSON API
 type LiveRoute struct {
 	ID          uuid.UUID `json:"id"`
 	Prefix      string    `json:"prefix"`
@@ -80,12 +83,16 @@ type LiveRoute struct {
 }
 
 // PrefixDistribution represents the distribution of prefixes by mask length
+//
+//nolint:tagliatelle // field names are the existing JSON API
 type PrefixDistribution struct {
 	MaskLength int `json:"mask_length"`
 	Count      int `json:"count"`
 }
 
 // IPInfo represents comprehensive IP information for the /ip endpoint
+//
+//nolint:tagliatelle // field names are the existing JSON API
 type IPInfo struct {
 	IP         string   `json:"ip"`
 	PTR        []string `json:"ptr,omitempty"`